Answer:
x = 7
x = -5
Step-by-step explanation:
Given
x² - 2x - 35 = 0
Consider the factors of the constant term (- 35) which sum to give the coefficient of the x- term (- 2)
The factors are - 7 and + 5, since
- 7 × 5 = - 35 and - 7 + 5 = - 2, thus
(x - 7)(x + 5) = 0
Equate each factor to zero and solve for x
x + 5 = 0 ⇒ x = - 5
x - 7 = 0 ⇒ x = 7
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(2x4 - 3x3 - 6x2 + 11x + 8) = (x-2) x = 0.25
Answer:
B
Step-by-step explanation:
Note (f - g)(x) = f(x) - g(x)
f(x) - g(x)
= - 4x² - 6x - 1 - (- x² - 5x + 3) ← distribute parenthesis by - 1
= - 4x² - 6x - 1 + x² + 5x - 3 ← collect like terms
= - 3x² - x - 4 → B
