Hey, pls answer this question with steps, pls no useless answers, I need explanation, if u don't know how to do it, just go, if u know pls just help.
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Answered by
1
Answer:
21
Step-by-step explanation:
√19-4√x = √12 - √7
square both side
19-4√x = (√12 - √7)^2 = 12+7-2√12*√7 = 19 - 2√12*7
-4√x = -2√12*7
2√x = √3*4*7 = 2√3*7
√x = √21
square both side
x = 21
Answered by
2
Answer:
option 3 is a correct answer
19−4 √x =12 − 7
On squaring both sides,
19−4 √x=12+7−2 √84
4 √x =2 √ 84
2 √x = √84
Again squaring both sides,
4x=84
x=21
Hope it helps you ✌️
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