Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. ANSWER –9, 9 1. The square roots of 81 are ? and ?. 2. In the expression 2 5, the.

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Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. ANSWER –9, 9 1. The square roots of 81 are ? and ?. 2. In the expression 2 5, the exponent is ?. ANSWER 5 3. For the polynomial function whose graph is shown, the sign of the leading coefficient is ?. ANSWERpositive

Prerequisite Skills Simplify the expression x 3 y –1 5x2y5x2y ANSWER 3x3x y2y2 9 4xy x –3 y –2 32x –3 y 4 9y9y 3x3x ANSWER 8x 15 y9y9 6. 2x 5 y –3 –3 SKILL CHECK

Prerequisite Skills Solve the equation for y 7. –2x – 5y = x – 4xy = 3 ANSWER y = 3x + 3 ANSWER y = – x – x – y = – ANSWER y = – + 2 4x4x 3 SKILL CHECK

Prerequisite Skills Graph the polynomial function. 10. f (x) = x 3 – 4x f (x) = – x 5 + 7x f (x) = x 4 – 4x 2 + x ANSWER SKILL CHECK