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Multiply and simplify. ∙

2×2 – 50 = 0

A combining form is a word root plus a(n):

5×2 + 7x – 6

In the expression the number 3 is the , the number 45 is the , and is called the sign.

Solve.Five divided by the difference of a number and 12 equals the quotient of 10 and the sum of the number and 4. Find the number.

The Pythagorean theorem states that (leg)2 + (leg)2 = ()2.

The process of eliminating the radical in the denominator of a radical expression is called .

x3 – 9×2 + 20x

t3 + 27