F(x) = x² + x - 20 = x² + 5x - 4x - 20 = x(x + 5) - 4(x + 5) = (x + 5)(x - 4)
f(x) = 0 ⇔ (x + 5)(x - 4) = 0 ⇔ x + 5 = 0 or x - 4 = 0 ⇒ x = -5 or x = 4
Answer: C. x = -5 and x = 4.
Math is real hard but I think irrational don’t quote me on that
Answer:
1,224 feet
Step-by-step explanation:
Multiply 51 feet times 24 feet and then you get 1,224 ft.
Answer:
1013500000
Step-by-step explanation:
Addition, mate.