Practice problem
Use the Quadratic Formula to calculate the roots of the following equation: x2−7x−28=−10x^{2}-7x-28=-10x2−7x−28=−10
x=−2x=-2x=−2 and x=9x=9x=9
x=2x=2x=2 and x=−9x=-9x=−9
x=4x=4x=4 and x=−18x=-18x=−18
x=−4x=-4x=−4 and x=18x=18x=18
Type a concept, like “slope” or “photosynthesis”.