X² - 7x = 9 solve the following equations by using the quadratic formula. Leave your answer in surd form
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Step-by-step explanation:

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FACTS TO KNOW BEFORE SOLVING :-

Quadratic Formula :-

For a quadratic equation ax² + bx + c = 0 , by using quadratic formula the roots of the equation are :-

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Lets solve the equation x² - 7x - 9 = 0 by quadratic formula.

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

step-by-step explanation: 2