Multiplication of Polynomials Review

Multiply: (2x)(x+3)

• 2x+3

• 2x²+3x

• 2x²+6

• 2x²+6x

(x+2)(x+3) = _____?

• x²+5x+6

• x²+2x+5

• 2x+5

• x²+6

Is (2x)(3x) equivalent to 5x?

• Yes!

• No, it is equivalent to 5x²

• No, it is equivalent to 6x²

FOIL in multiplication of two binomials means First, Outer, Inner and ____.

(5x + 2)(x² - 3x + 6)

Mathematical Equivalence

ON

Find the product: 5a(a² + 3a - 4 )

• 5a² + 15a - 20

• 5a³ - 15a² + 20a

• 5a³ + 15a² - 20a

• 5a² - 15a + 20

What is a mathematical expression with variables raised to whole number exponents?

Whole Numbers = {0, 1, 2, 3, ...}

• Polynomial

• Equation

• Fraction

• Whole

When you multiply polynomials, what do you do with the exponents?

• Add them

• Multiply them

• Nothing

2x(-3y)

• 2x - 3y

• -6xy

• 6xy

5. (3x + 1)(2x +1)