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aniked [119]
3 years ago
13

What does 5 + 8h equals -7

Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0
-12/8 or -1.5
Subtract 5 both sides getting -12
Divide 8 both sides getting -12/8
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Solve x4 - 11x2 + 18 = 0.
lara31 [8.8K]

Answer:

x=√2, x=-√2, x= 3 and x=-3

Step-by-step explanation:

We need to solve the equation x^4 - 11x^2+18=0  

We can replace x^4 = u^2 and x^2 = u

So, the equation will become

u^2 -11u+18 = 0

Factorizing the above equation:

u^2 -9u-2u+18 =0

u(u-9)-2(u-9)=0

(u-2)(u-9)=0

u=2, u=9

As, u = x^2, Putting back the value:

x^2 =2 , x^2 =9  

taking square roots:

√x^2 =√2 ,√x^2=√9  

x=±√2 , x = ±3

so, x=√2, x=-√2, x= 3 and x=-3

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Answer:

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Step-by-step explanation:

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3 years ago
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Fofino [41]

Answer:

39%

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83-last price

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A 120-inch strip of metal 12 inches wide is to be made into a small open trough by bending up two sides on the long side, at rig
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Answer:

x= 3 inch should be turned up on each side

Step-by-step explanation:

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Hence x= 3 inch should be turned up on each side

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3 years ago
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