Question

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Answer 1

Resposta:

a) (3x + 5)² =

(3x + 5)(3x + 5) =

9x² + 15x + 15x + 25

9x² + 30x + 25

b) (2x - 4)² =

(2x - 4)(2x - 4)=

4x² - 8x - 8x + 16=

4x² - 16x + 16

c) (4x - 2)² =

(4x - 2)(4x - 2) =

16x² - 8x - 8x + 4 =

16x² - 16x + 4

d) (2x + 7)² =

(2x + 7)(2x + 7) =

4x² + 14x + 14x + 49

4x² + 28x + 49

espero ter ajudado <33

Answer 2

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