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2 years ago

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Factor completly x^2 -12x -45

1 answer:

andreev551 [17]2 years ago

5 0

∑ Hey, jillianwagler ⊃

Answer:

$\left(x+3\right)\left(x-15\right)$

Step-by-step explanation:

<u><em>Given info:</em></u>

<em>Factor completely: </em> $x^2 -12x -45$

<u><em>Solve:</em></u>

<em>Break the expression to : </em> $\left(x^2+3x\right)+\left(-15x-45\right)$

Factor out x from x²+ 3x :x ( x +3 )

Factor out -15 from -15x - 45 : -15( x + 3 )

Put them together:

$x\left(x+3\right)-15\left(x+3\right)$

Now factor x + 3

Answer~: $\left(x+3\right)\left(x-15\right)$

<u><em>xcookiex12~</em></u>

<em>8/19/2022</em>

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Step-by-step explanation:

Let x be the number of heaters and y be the total cost.

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