Samanthalovesmath
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Pre-calculus homework help
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DaalChawal
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It's easy, let's suppose the quadratic is $ax^2 +bx +c = 0$ From the graph we can say $c= -12$ and if you know that the vertex is given by ( $-b \over 2a$ , $-D \over 4a$ )
Put the values you will get the answer.
Put the values you will get the answer.