<span>5x + 20 = -5x
5x + 5x = -20
10x = -20
x = -20/10
x = -2</span>
X^2 +3x-4=0
(X+4)(x-1)=0 so x = -4 and x=1 are solutions
2 to the negative 1 power. When you divide two exponents with the same base, you subtract the two exponents to get your answer.
:)
(x - 4)²
(x - 4)(x - 4)
x² - 4x - 4x + 16
x² - 8x +16
1
3.50
3.50
+3.50
______
10 .50
