What is the answer to [(x²+4x)-2]²
1 answer:
Answer:
+ 8x³ + 12x² - 16x + 4
Step-by-step explanation:
Given
[(x² + 4x) - 2 ]² ← simplify contents of bracket
= (x² + 4x - 2)² = (x² + 4x - 2)(x² + 4x - 2)
Each term in the second factor is multiplied by each term in the first factor, that is
x²(x² + 4x - 2) + 4x(x² + 4x - 2) - 2(x² + 4x - 2) ← distribute parenthesis
= + 4x³ - 2x² + 4x³ + 16x² - 8x - 2x² - 8x + 4 ← collect like terms
= + 8x³ + 12x² - 16x + 4
You might be interested in
X varies directly as y
x = ky
3 = 2k
k =
when x =9
9 =y
= y
∴y = 6
please mark as brainliest
x = ky
3 = 2k
k =
when x =9
9 =
∴y = 6
please mark as brainliest
Answer:
I believe the slope would be -2
Step-by-step explanation:
The line goes <u>down 2</u> boxes and <u>over 1</u> box before it intersects with another point. Knowing slope = , we know that slope =
which is equal to -2.