3 years ago

Which of the following are solutions to 2x^2 -8x -90

1 answer:

6 0

Please equate 2x^2 -8x -90 to zero: <span>2x^2 -8x -90=0

Next, reduce </span>2x^2 -8x -90=0 by div. all terms by 2: x^2 -4x -45=0

Next, factor the poly: (x-9)(x+5) = 0

Set each factor = to 0 and solve for x:

x-9=0 => x=9
x+5=0 => x= -5

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