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What are the x-intercepts of the graph of the function f(x) = x2 + 5x − 36? A. (−4, 0) and (9, 0) B. (4, 0) and (−9, 0) C. (−3, 0) and (12, 0) D. (3, 0) and (−12, 0)

Nicholas Rivera

in Mathematics

1 answer

1 answer

Dana Keller on July 5, 2018

we havewe know that the x-intercepts are the values of x when the value of the function is equal to zerosoEquate the function to zero and solve for xGroup terms that contain the same variable, and move the constant on the opposite side of the equationComplete the square. Remember to balance the equation by adding the same constant to each side.Rewrite as a perfect squaresthereforethe x-intercepts are the points the answer is the optionB. (4, 0) and (-9, 0)

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