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(x±a)(x±b) = x²±(a+b)x+ab.

Solve for x...

Question

Solve for $x$ : $7 (x - 8) = 3 (x + 9)$

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Solution

Given that,

$7 (x - 8) = 3 (x + 9)$

$\Rightarrow 7 x - 56 = 3 x + 27$

$\Rightarrow 4 x = 83$

$∴ x = 20.75$

Hence, this is the required solution.

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(x±a)(x±b) = x²±(a+b)x+ab.

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