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Find all solutions to the equation $x^2 - 7x = 30$.

If you find more than one, then list the values separated by commas. If the solutions are not real, then they should be written in $a + bi$ form.

Jan 23, 2021

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x2 -7x - 30 = 0   Use Quadratic Formula    a = 1   b =  -7   c = -30

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}$$         you will find    x = 10 and -3

(x-10)(x+3) = x^2 -7x-30     check !

Jan 23, 2021