Question

produtos notáveis

a- (a+b)²=
b- (x+5)²=
c- (b-3)²=
d- (4x+1)²=
e- (a-5)²=
f- (2x-7)²=
g- (a-9)²=

Answer 1

$a)\;(a+b)^2=a^2+2ab+b^2\\b)\;(x+5)^2=x^2+10x+25\\c)\;(b-3)^2=b^2-6b+9\\d)\;(4x+1)^2=16x^2+8x+1\\e)\;(a-5)^2=a^2-10a+25\\f)\;(2x-7)^2=4x^2-28x+49\\g)\;(a-9)^2=a^2-18a+81$

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