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Year10 chevron_right Malaysia

The answer for this is 1.60 , -1.10
but no matter how I do it I still get it wrong
can anyone tell me where I got it wrong?

Date Posted: 5 months ago
Views: 36
5 months ago
(-2)² - 4(4)(-7) = 116
Su Tay
Su Tay
5 months ago
Your denominator is wrong. It should be 2a. But you only used one.

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Eric Nicholas K
Eric Nicholas K's answer
2263 answers (Tutor Details)
The denominator in the formula is '2a', not 'minus a'.