Asked by Ariana
factor this expression
x^2 + 11x + 28
I know the answer is (x+ 4) (X + 7)
BUT
can you walk me through each step
thank you from the bottom of my heart
x^2 + 11x + 28
I know the answer is (x+ 4) (X + 7)
BUT
can you walk me through each step
thank you from the bottom of my heart
Answers
Answered by
R_scott
the x^2 factors to x and x
the 28 has to factor into two numbers that sum to 11 ... like 4 and 7
when you FOIL the two binomials, (x + 4)(x + 7)
... you get ... x^2 + 11x + 28
the 28 has to factor into two numbers that sum to 11 ... like 4 and 7
when you FOIL the two binomials, (x + 4)(x + 7)
... you get ... x^2 + 11x + 28
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