+0  
 
0
67
1
avatar

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
 #1
avatar
0

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

40 Online Users

avatar
avatar
avatar