Mathematics: Which shows the factored form of x2 – 12x – 45? (x + 3)(x – 15) (x – 3)(x – 15) (x + 3)(x + 15) (x – 3)(x + 15)

Which shows the factored form of x2 – 12x – 45? (x

alundriaf6206

08.06.2020

Option 1 is correct that is (x+3)(x-15)

Step-by-step explanation:

the given expression is x^2-12x-45

We have to tell its factored form

We will factorize it by middle term, splitting equation being quadratic

it can be rewritten as:

x^2-15x+3x-45

$\Rightarrow x^2-15x+3x-45$

$\Rightarrow x(x-15)+3(x-15)$

$\Rightarrow (x+3)(x-15)$

Hence, Option 1 is correct

Rest of the options will be discarded.

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