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justinjoyner12p5ox1r
16.08.2020 •
Mathematics
Find x, if 3x − 5(y + x ) ^2 = 16 and 4x + 2(y + x )^ 2 = 30
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Ответ:
x is 7
Step-by-step explanation:
3x - 5(y + x)^2 = 16
3x - 16 = 5(y + x)^2
(y + x)^2 = 1/5(3x - 16) eqn(I)
4x + 2(y + x)^2 = 30
2(y + x)^2 = 30 - 4x
(y + x)^2 = 1/2(30 - 4x) eqn(II)
Equate eqn (I) & (II)
1/5(3x - 16) = 1/2(30 - 4x)
Multiply both sides by 10
2(3x - 16) = 5(30 - 4x)
6x - 32 = 150 - 20x
6x + 20x = 150 + 32
26x = 182
x = 182/26 = 7
Ответ:
lol this isn't tind.er
Step-by-step explanation:
NO