Question

Identity (x+a)(x+b)=

Answer 1

Answer:

$x {}^{2} + (a + b)x + ab$

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Answer 2

Step-by-step explanation:

$x(x + b) + a(x + b) \\ = {x}^{2} + bx + ax + ab \\ = {x}^{2} (a + b) x + ab$

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