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Published byBrittany Bates Modified over 9 years ago
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Warm Up 03.19.13 Week 1 1) 2( x + 4 ) 2x 2 = 50 2x + 8 x = ±5 2)
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Re 1 ( 4r 2 – 6r + 7 ) - ( r – 7r 2 – 1 ) 1 + 8- 7r+ 11r 2 r - 6r + 7 - 7r 2 4r 2 11r 2 – 7r + 8Answer - + + - - + +
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I will multiply polynomial expressions. Section 10.2 Day 1 Binomial TwoNumbers Binomial 7x - 9 Monomial OneNumber 8x
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Rule 1 Distribute factors on outside of parentheses to all terms on the inside. Ex 1 8x( 7x - 9 ) - 72x56x 2
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Ex 2 4x 2 ( 7x 3 – 5x + 6 ) + 24x 2 - 20x 3 28x 5 Rule 2 Add exponents when multiplying similar bases. 1 x0x0
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Rule 3 First = Outside = Inside = Last = Ex 3 ( x + 5 ) ( x + 3 ) x 2 x 2 + 8x + 15 + 3x + 5x + 15 Multiply terms using FOIL +x 2 +3x +5x +15
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Ex 4 ( 2x - 9 ) ( 6x + 7 ) 12x 2 12x 2 - 40x - 63 + 14x - 54x - 63
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Ex 5( 7r - 5 ) ( 4r - 3 ) 28r 2 28r 2 - 41r + 15 - 21r - 20r + 15
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Review FOIL means ____, ____, ____, ____. AssignmentHandout – Section 10.2 Day 1 ( 4x - 3 ) ( 5x + 4 ) Check 1:
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