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## Answers

=2x²-x²+8x+2x-3x-7x=21-8

=x²=13

or, x=√13

or,x=+3.61 or - 3.61 (approx)

Ans:x=+3.61 or - 3.61 (approx)

(x+7)(x+3) = x²+10x+21

given that (x+1)(2x+8) = (x+7)(x+3)

⇒2x²+10x+8 = x²+10x+21

⇒x²=13

⇒x=√13 .

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=2x²-x²+8x+2x-3x-7x=21-8

=x²=13

or, x=√13

or,x=+3.61 or - 3.61 (approx)

Ans:x=+3.61 or - 3.61 (approx)

(x+7)(x+3) = x²+10x+21

given that (x+1)(2x+8) = (x+7)(x+3)

⇒2x²+10x+8 = x²+10x+21

⇒x²=13

⇒x=√13 .