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Mathematics
Ahmed
17 May, 18:28
Solve the equation.
X^2=2x^2 + 4
+4
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2
)
Bernard
17 May, 19:19
0
No real solution or if you learned imaginary numbers, 2i
Step-by-step explanation:
x^2=2x^2+4
x^2=x^2+x^2+4
Subtract x^2 from both sides
0=x^2 + 4
Subtract 4 from both sides
x^2 = - 4
Square root both sides
x=sqrt (-4)
x=2i or no real solutions
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Ari Skinner
17 May, 20:04
0
First step:
Subtract 2x^2 from both sides to get x by itself but remember there is always an invisible 1 infront of x, So ...
1x^2 = 2x^2 + 4
-2x^2 - 2x^2
-1x^2 = 4
Second step:
Divide - 1 from both sides to get x by itself
-1 / - 1 x^2 = 4 / - 1
X^2 = - 4
Third step:
Since the x has an exponent, the power function with an even exponent is always positive or 0
X = 0
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