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steposvetlana [31]
3 years ago
13

What are the zeros of the quadratic function f(x)=8x^2-16x-15

Mathematics
1 answer:
Marina86 [1]3 years ago
8 0


(4 +  \sqrt{46} ) \div 4
(4 -  \sqrt{46} ) \div 4

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What is the simplest form of 4 square root 81x^8y^5?
olasank [31]
Firstly,
thanks for posting this.

81 = 9x9 or 9 squared so at this stage I'm guessing the last two. 
x^ 8 = (x^ 4) x (x^ 2) (its called the multiplication rule of indices). 
Okay I have approx 14 mins to answer.
No panic
√ 81.x^8 x <span>√ y^5
</span>√ (9x^2 x 9x^6) x <span>√ y^5
</span>= 9x x <span>√ 9x^6 x  </span><span>√ y^5
</span>did I just gain time?
√ 9x^6 = <span>√ </span>3x ^3 x <span>√ 3x ^ 3
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√ 9x^6 =<span>√ </span> (3x^2) x <span>√ </span>(3x^4)




5 0
3 years ago
How to do the problem
trapecia [35]

Step-by-step explanation:

g(0.5) = 2 \\  \\ h(x) = g(x).f(x) \\  \therefore \: h(2) = g(2).f(2) \\  \therefore \: h(2) = 5 \times 2\\ \therefore \: h(2) = 10\\  \\ \\  j(x) = g(x) - f(x) \\  \therefore \: j(4) = g(4) - f(4) \\  \therefore \: j(4) = 9 - 8\\ \therefore \: j(4)  = 1\\  \\  \\

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Step-by-step explanation:

Objective: Recall the properties.

a) 3+1=4

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c) 3+(7+4)=7+(3+4)

d). 3(7+4)=(3×7)+(3×4)

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1) f(x) = - x2 + 4x - 10<br> Find f(5)
Natali5045456 [20]
Substitute the x with 5
-(5)2 + 4(5) - 10 = 0
3 0
2 years ago
Halp xD I took away the ones that I did
FinnZ [79.3K]
4. is 46
8. is 438 dimes
9. is 3.099, 3.289, 3.644, 3.9
10. is .4868
3 0
3 years ago
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