a = 4, b = -21, c = -18
to keep from getting "mixed up", evaluate the discriminant first ...
b<sup>2</sup> - 4ac = (-21)<sup>2</sup> - 4(4)(-18) = 729
sqrt(729) = 27
x = (21 +/- 27)/8
x = -3/4, x = 6
since the discriminant is a perfect square, the original quadratic will factor ...
4x<sup>2</sup> - 21x - 18 = 0
(4x + 3)(x - 6) = 0
x = -3/4, x = 6
Answer:
the correct answer is y = x 2 + 3x - 5 and x + y = -10
Step-by-step explanation:
G(-2) = 8 + 5(2)
= 8 - 10
= - 2
Answer:
the answer is 3 raised ro the third power
