 That is, the square of the difference of two numbers is equal to the square of the first number, minus twice the product of the two numbers, plus the square of the second number.  First Course in Algebra - Σελίδα 102των Walter Burton Ford, Charles Ammerman - 1919 - 334 σελίδεςΠλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | George Egbert Fisher, Isaac Joachim Schwatt - 1901 - 646 σελίδες
...multiplication, we have (a - e)1 = (a - 6) (a - 6)= as - 2a6 + b\ That is, the square of the difference of two numbers is equal to the square of the first number, minus twice the product of the two numbers, plus the square of the second number. Eg, (3 x - 7 y)* = (3 -r)s - 2 (3 x) (7 y) + (7 y)*... | |
 | George Egbert Fisher - 1901 - 622 σελίδες
...4 я? + 20 xy + 25 y\ 3. By actual multiplication, we have That is, the square of the difference of two numbers is equal to the square of the first number, minus twice the product of the two numbers, plus the square of the second number. 4. Observe that this type-form is equivalent to that... | |
 | William James Milne - 1901 - 476 σελίδες
...square of (a — &) differ from the square of (а+&)? 93. PRINCIPLE. — The square of the difference of two numbers is equal to the square of the first number, minus twice the product of the first and second, plus the square of the second. EXAMPLES Expand by inspection : 1. (ж — m) (ж... | |
 | George Egbert Fisher, Isaac Joachim Schwatt - 1901 - 664 σελίδες
...multiplication, we have (a - 6)2 = (a - 6) (o - 6) = a2 - 2 ab + b\ That is, the square of the difference of tivo numbers is equal to the square of the first number, minus twice the product of the two numbers, plus the square of the second number. Eg, (3 x - 1 2/)2 = (3 .г-)2 - 2 (3 x) (7 y) + (7 t/)2... | |
 | George Egbert Fisher, Isaac Joachim Schwatt - 1902 - 504 σελίδες
...multiplication, we have (a - 6)2 = (a - 6) (a - 6) = a2 - 2 ab + 62. That is, the square of the difference of two numbers is equal to the square of the first number, minus twice the product of the two numbers, plus the square of the second number. Eg, (3x-7y? = (3 x)> - 2 (3 a>) (7 y) + (7 y? Observe... | |
 | John William Hopkins - 1904 - 276 σελίδες
...differa2 — ab ence of a(a — 6) and b(a — 6). - ab + ft2 Hence, The square of the difference of two numbers is equal to the square of the first number minus twice the product of the first number and the second number plus the square of the second number. G-eometric Proof. Let AB =... | |
 | Herbert Ellsworth Slaught, Nels Johann Lennes - 1907 - 328 σελίδες
...type exhibited in the figure, page 83. Translated into words this identity is : The square of the sum of any two numbers is equal to the square of the first plus twice the product of the two numbers plus the square of the second. 88. Similarly we obtain the... | |
 | William James Milne - 1908 - 476 σελίδες
...also that (x — y](x — y) = я? — 2 xy + y2. 108. PRINCIPLE. — T!ie square of the difference of two numbers is equal to the square of the first number, minus twice the product of the first and second, plus the яqиаге of the second. • EXERCISES 109. Expand by inspection, and... | |
 | William James Milne - 1908 - 480 σελίδες
...+ &2; also that (x — ?/)(» — у)=я? — 2 108. PRINCIPLE. — 7%e square of the difference of two numbers is equal to the square of the first number, minus twice the ¡induct of the first and second, plus the square of the second. EXERCISES 109. Expand by inspection,... | |
 | Herbert Ellsworth Slaught, Nels Johann Lennes - 1908 - 520 σελίδες
...type exhibited in the figure, page 83. Translated into words this identity is : The square of the sum of any two numbers is equal to the square of the first plus twice the product of the two numbers plus the square of the second. 88. Similarly we obtain the... | |
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