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4. Give the rule for forming the square of a multi

nomial.

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(8) x1 — 8x3-26x2 + 168x+441.

(9) 4x1—12x3+25x2−24x+16.

(10) I+4x+10x2 + 12x3+9xa.

(11) 9x1—1213y+34r2y2 —20xy3+25ya.

(12) 10x1 — 10x3 — 12x3 + 5x2 +9xo −2x+1.
(13) x6—2px2+p2x1 — 2rx3 +2prx2+r2.

(14) x6+10ax3+35a2x2+52a3x3 +35a2x2 + 10a3x

+a6.

(15) 9x3-12ax2 +4a2x® +6a3x3 — 4aaxa + a®x2.

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(22) 4a2+c2+(4a+3b) (3b−2c) + 4ac.
(23) a2b2+2ab (bc—ca)+b2c2+a2c2 — 2abc3.
(21) 9(a2 — 1)2 — 12 (a2 — 1)a+4a2.
(25) a1+b ̄1+4(a3b−1+a ̄1b3)+6a2b−2.

(26) a+b+4a5b-1+2b ̄5a+2a1b ̄2 — 3b ̄1aa

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(30) 20449, 2*0449. (31) 19321, 19321, 19°321.

(32) 62900761, 62900761, 6290076·1.

2. Find the cube root of

(1) a3 +3a2b+3ab2+b3.

(2) a3x3-12a3bx3 +48ab2x3-64b3x3.
(3) 8a3-36a2b+54ab2-2763.

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2. Write in simpler forms

(1) (√x)3. (2) ~/(ax)". (3) 5ax\

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5x

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I

(2a + }) (26 + 1 ) = ( 2 √āb + vad)".

6.

7. Find the value of

Vab

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10. Which is the greater, √14 + √7 or √19 + √2?

Prove your answer.

11. Shew that a surd cannot equal the sum or difference of a rational quantity and a surd.

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2

(16) (x-1) — 25 (x − 1)+4=0.

2. Solve the equation x2-px+q=0; and shew that the sum of the roots is equal to p, and their product is equal to q.

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