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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

1 answer

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

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