State True or False:
$(x + 8) (x - 10)$ $= x^{2} - 2 x - 80$

True

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False

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Solution

The correct option is A True
$(x + 8) (x - 10)$
using, $(x + a) (x + b) = x^{2} + (a + b) x + a b$
$= x^{2} + (8 + (- 10)) x + (8) (- 10)$
$= x^{2} - 2 x - 80$

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