Question

CALCULE :
a) (x + 5 )^2=
b) (3y^2-2)=^2
C ) ( 2x + b ) (2x -b)=
D) (2x-1)2 =
E) (x-4c)2=

Answer 1

(x + 5)² = x² + 10x + 25
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                     4
(3y² - 2)² = 9y - 12y² + 4
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(2x + b)(2x - b) = 4x² - b²
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(2x - 1)² = 4x² - 4x + 1
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(x - 4c)² = x² - 8xc + 16c²