exam Maths Puzzle Numerical Ability

Solve.

w^4 - 4w^2 - 2 = 0

What is the solution? w = _____

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exam Other Question

Which of the following is a line parallel to y = ½x + 4? @ The slopes of parallel lines have the same slope values.
a. y = ½x – ¼
b. y = 2x – 4
c. y = 2x – ¼
d. y = -2x
I have to solve a compound inequality. This is from a worksheet from my teacher. It says x < 13 or x >= 65. It seems to me that because x is already simplified, I should just wr