6x^2 - 8 = 4x^2 + 7x
6x^2 - 4x^2 - 7x - 8 = 0
2x^2 - 7x - 8 = 0
discriminant = b^2 - 4ac; where a = 2, b = -7 and c = -8
d = (-7)^2 - 4(2)(-8)
d = 49 + 64
d = 113
the discriminant is greater than zero, so there are two real roots
Answer:
She applied the exponent -2 to 4(-2) instead of applying the exponent to just -2.
Step-by-step explanation:
i got my rerecord from my flash cards my teacher made of some answers
Answer:
-3
Step-by-step explanation:
-7 + 4 = -3
Answer:
? = 50°
Step-by-step explanation:
? = 180° - 130° = 50°
