Question

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Answer 1

(x+3)² =x²+2•x •3+3²= x²+6x+9
(x+2)²=x²+2•x•2+2²= x²+4x+4
(x+1)²=x²+2•x•1+1²= x²+2x+1
(x+5)²=x²+2•x•5+5²=x²+10x+25
(x-2)²=x²-2•x•2-2²=x²-4x-4
(x-3)²=x²-2•x•3-3²=x²-6x-9
(x+6)²=x²+2•x•6+6²= x²+12x+36
(x+7)²=x²+2•x•7+7²=x²+14x+49
(x+8)²=x²+2•x•8+8²=x²+16x+64
(x-9)²=x²-2•x•9-9²= x²-18x-81
(x-10)²=x²-2•x•10-10²=x²-20x-100
x²-4= x²-4²=x-16
x²-9=x²-9²=x²-81
x²-16=x²-16²=x²-226
x²-25=x²-25²=