Question

BRAINLIEST QUESTION
I WANA EXPLANATION ALSO​

Answer 1

Answer:

$length = x + 4$

Step-by-step explanation:

$let \: the \: length \: be \: l \\ b = x + 3 \\ area = {x }^{2} + 7x + 12\\ \\ area \: of \: rectangle \: = lb \\ {x}^{2} + 7x + 12 = l(x + 3) \\ {x }^{2} + 3x + 4x + 12 = l(x + 3) \\ l = \frac{ {x}^{2} + 3x + 4x + 12 }{(x + 3)} \\ l = \frac{x(x + 3) + 4(x + 3)}{(x + 3)} \\ l = \frac{(x + 3)(x + 4)}{(x + 3)} \\ l = x + 4$

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