Question

(2x+5) (2x+7) is equal to​

Answer 1

Step-by-step explanation:

$2x(2x + 7) + 5(2x + 7)$

$4 {x}^{2} + 14x + 10x + 35$

$4 {x}^{2} + 24x + 35$

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Answer 2

Step-by-step explanation:

$(2x + 5)(2x + 7) \\ = {x}^{2} + (a + b)x + ab \\ = {(2x)}^{2} + (5 + 7)2x + 5 \times 7 \\ = 4 {x}^{2} + 10x + 14x + 35 \\ = 4 {x}^{2} + 24x + 35$