*2.) Which trinomial is equivalent to 4(x - 5)^2– 3(x - 2)?
1 answer:
Answer:
4x² - 43x - 106
Step-by-step explanation:
4(x - 5)²– 3(x - 2)
4(x - 5)(x - 5) - 3 (x - 2)
distribute
4<u>(x(x - 5)</u><u> - </u><u><em>5(x - 5)</em></u>) - 3 (x - 2)
4<u>(x² - 5x</u> - <u><em>5x - 25</em></u>) - 3 (x - 2)
↓
combine like terms ↓
4(x² - 10x - 25) ((( ↓
distribute again ↓
4x² - 40x - 100 ↓
↓
distribute ↔ ↓
4x² - 40x - 100 - 3 (x - 2)
4x² - 40x - 100 - 3x + 6
add
4x² - 40x - 106 - 3x
combine
4x² - 43x - 106
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Answer:
2
Step-by-step explanation:
A coefficient is a number of times a variable. So in this equation. 2 is being multiplied by y. so 2 is the coefficient.
2x^2 - 7x - 6 = 0
where a=2
where b=-7
where c=-6
solve for x1 and x2
x1=4.21
x2=-0.71
(2+4)/(-2-d) = -2
6 = -2(-2-d)
6 = 4 + 2d
2 = 2d
1 = d
1/6·30=5
so your answer is b)5
co·ef·fi·cient
ˌkōəˈfiSHənt/Submit
noun
1.
MATHEMATICS
a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g., 4 in 4x y).
So, 22 is your coefficient.
