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skad [1K]
3 years ago
6

Find x if (117 + x)(V17 – x) = 12.

Mathematics
1 answer:
liraira [26]3 years ago
8 0

Answer: x = ±√145

Step-by-step explanation:

√(17 + x) × √(17 - x) = 12

√(17 + x) (17 - x) = 12

Squaring both sides,

(√(17 + x) (17 - x))^2 = 12^2

(17 + x) (17 - x) = 144

17(17 - x) + x(17 - x) = 144

289 - 17x + 17x - x^2 = 144

x^2 = 289 - 144

x^2 = 145

x = ±√145

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8 0
2 years ago
Find the perimeter of the following rectangle.
Ede4ka [16]

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6 0
2 years ago
Which of the following are roots of the following polynomial x^3-11x^2+33x+45
Mandarinka [93]
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      x^2-12x+45
       ___ ________________________
x+1 | x^3-11x^2+33x+45

      - (x^3+x^2)
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          ______________
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         -(45x+45)
___________
0


Since that works, it's either B or D. We just have to figure out when
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3 years ago
How do I find x (area of rectangle &amp; trapezium?
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3 years ago
Solve this problem too
leonid [27]

Answer:

1.120

Step-by-step explanation:

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3 0
2 years ago
Read 2 more answers
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