Please check my answer! Medal + Fan

For the equation y = 2x^2 − 5x + 18, choose the correct application of the quadratic formula.

Question

Please check my answer! Medal + Fan

For the equation y = 2x^2 − 5x + 18, choose the correct application of the quadratic formula.

anonymous · Answer

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anonymous · Answer

I think it's A, but my mom thinks it's B, so I'm not 100% sure.

anonymous · Answer

I know the formula for the quadratic equation, but I wasn't 100% sure cause B is a negative. So it really should look like -(-5) not -5

freckles · Answer

-(-5)=5

anonymous · Answer

My mom thought it was B, because once you simplify -(-5), it becomes positive. But I know that you simplify the radicand before you do anything else, so I wasn't sure if it was A or B.

freckles · Answer

mommy was right since -(-5)=5 not -5

jim_thompson5910 · Answer

a = 2, b = -5, c = 18

take the opposite of the value of b to go from -5 to +5

so choice B is the only one that fits that has +5 as the first thing in the numerator

anonymous · Answer

Okay, thanks guys. I'll put B.