Mathematics
samantha98
8

solve -16x^2+56x+72=0

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(1) Answers
nevar

-16x^2 + 56x + 72 = 0 Let's factor out an 8 8 (-2x^2 + 7x + 9) = 0 Now factor the trinomial 8(-2x + 9)(x + 1) = 0 8 can't equal zero so let's set each parentheses to zero and solve. -2x + 9 = 0 ..... x + 1 = 0 -2x = -9 .....      x = -1 x = 9/2 Solution set is (9/2, -1)

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