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Expansion of (x+a)(x+b)

State true or...

Question

State true or false:
If $x^{2} + 7 x = 44$ , then $x$ is $4$ or $11$ .

A

True

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B

False

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Solution

The correct option is B False
$x^{2} + 7 x = 44$
$x^{2} + 7 x - 44 = 0$
$x^{2} + 11 x - 4 x - 44 = 0$
$(x + 11) (x - 4) = 0$
$x = 4, - 11$

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