Factor x2 + x – 42.
An x-method chart shows the product negative 42 at the top of x and...
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Mathematics, 21.05.2020 19:03 brianna4455
Factor x2 + x – 42.
An x-method chart shows the product negative 42 at the top of x and 1 at the bottom of x. 7 is on the left side of x and negative 6 is on the right side.
Use the completed X diagram to replace the x-term in the trinomial with two x-terms.
x2 + x – 42 = x2 +– 42
Next, use double grouping to factor the four terms.
= x()–(x + 7)
=
To verify, the factors.
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