Answer:
46 and 277
Step-by-step explanation:
Given
f(x) =
- 8x - 11 ← substitute x = 3, x = - 4 into f(x)
f(3) =
- 8(3) - 11 = 81 - 24 - 11 = 81 - 35 = 46
f(- 4) =
- 8(- 4) - 11 = 256 + 32 - 11 = 288 - 11 = 277
Do 11/24 + 2/5. then subtract your answer from 240
Answer:
Step-by-step explanation:
2(6x² - 3) = 11x² - x
2*6x² - 2*3 = 11x² - x
12x² - 6 = 11x² -x
Subtract 11x² from both sides
12x² - 11x² - 6 = -x
x² - 6 = -x
x² + x - 6= 0
Sum =1
Product = -6
Factors = 3 , (-2) { 3*(-2) = -6 & 3 +(-2) = 1}
x² + 3x - 2x - 6 = 0
x(x + 3) - 2(x + 3)= 0
(x +3)(x - 2) = 0
Answer:
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Step-by-step explanation:
Answer:
x² - 64
Step-by-step explanation:
Given
(x + 8)(x - 8)
Each term in the second factor is multiplied by each term in the first factor, that is
x(x - 8) + 8(x - 8) ← distribute both parenthesis
= x² - 8x + 8x - 64 ← collect like terms
= x² - 64