Question

a)(x+1)² -(x-2)²
b)(x+1)² - x² - 17
c)x(x+5) - (x+1)² - 26

Answer 1

oi
a) (x+1)²-(x-2)²
(x+1).(x+1) - (x-2) (x-2)
x²+2x+1 - (x²-4x+4)
x²+2x+1-x²+4x-4
6x-3

b) (x+1) (x+1) -x²-17
x²+2x+1-x²-17
2x-16

c) x(x+5) - (x+1)²-26
x²+5x - ( x²+2x-1) -26
x²+5x-x²-2x-1-26
5x-2x -27
3x-27

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