Juanita begins to factor an expression as shown. x2+3x−18=(x+)(x−) What numbers should be placed in the boxes from left to right?

David McEwing asked May 21, 2023

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25 votes

Juanita begins to factor an expression as shown.

x2+3x−18=(x+)(x−)

What numbers should be placed in the boxes from left to right?

David McEwing asked May 21, 2023

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17 votes

Answer:

(x+6)(x-3)

solve:

$\sf x^2+3x-18$

the least common multiple of 1 and 18 is 18 : 6 * 3

$\sf x^2+6x-3x-18$

breakdown

$\sf x(x+6)-3(x+6)$

build parenthesis

$\sf (x-3)(x+6)$

Jan Richter answered May 27, 2023

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