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Add and subtract $\displaystyle\left(\frac{b}{2a}\right)^2$
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$x^2-7x-12+\frac{49}{4}-\frac{49}{4}$
Learn how to solve problems step by step online. Factor the expression x^2-7x+-12. Add and subtract \displaystyle\left(\frac{b}{2a}\right)^2. Factor the perfect square trinomial x^2+-7x+\frac{49}{4}. Subtract the values -12 and -\frac{49}{4}.