Question
Solve the equation
y1=−248,y2=248
Alternative Form
y1≈−0.840896,y2≈0.840896
Evaluate
y4=21
Take the root of both sides of the equation and remember to use both positive and negative roots
y=±421
Simplify the expression
More Steps

Evaluate
421
To take a root of a fraction,take the root of the numerator and denominator separately
4241
Simplify the radical expression
421
Multiply by the Conjugate
42×423423
Simplify
42×42348
Multiply the numbers
More Steps

Evaluate
42×423
The product of roots with the same index is equal to the root of the product
42×23
Calculate the product
424
Reduce the index of the radical and exponent with 4
2
248
y=±248
Separate the equation into 2 possible cases
y=248y=−248
Solution
y1=−248,y2=248
Alternative Form
y1≈−0.840896,y2≈0.840896
Show Solution
