x^2+8x=10
A 1.1, 9.1***
B 1.1, -9.1
C -1.1, 9.1
D -1.1, -9.1
2 answers
It's actually b.
x^2 + 8x - 10 = 0.
Use Quadratic Formula:
X = (-B +- sqrt(B^2-4AC))/2A.
X = (-8 +- sqrt(64+40))/2,
X = (-8 +- 10.2)/2 = 1.1, and -9.1.
Use Quadratic Formula:
X = (-B +- sqrt(B^2-4AC))/2A.
X = (-8 +- sqrt(64+40))/2,
X = (-8 +- 10.2)/2 = 1.1, and -9.1.