Alg1 Notes 7.5.notebook March 07, 2013 Skills we've learned Skills we need Determine whether the following are perfect squares. If so, find the square root. 1) 64 2) 36 3) 45 4) x 2 5) y 8 6) 4x 6 7) 9y 7 8) 49p 10 75 Factoring Special Products 1. 5x 2 + 17x +6 2. 2x 2 +5x– 12 Factor each polynomial. 3. 6x 2 – 23x +7 4. –4x 2 + 11 x + 20 5. –2x 2 +7x –3 6. 8x 2 + 27 x+ 9 Warmup Answers
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75 Factoring Special Products - bisd303.org...Alg1 Notes 7.5.notebook March 07, 2013 Circle each trinomial that is a perfect square. 1. 9x2 – 15x + 64 2. 81x2 + 90x + 25 3. 6x2 –
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Alg1 Notes 7.5.notebook March 07, 2013
Skills we've learned
Skills we needDetermine whether the following are perfect squares. If so, find the square root. 1) 64 2) 36 3) 45
Circle each binomial that is a difference of two squares.
IV. Factoring the Difference of Two Squares
Factor each binomial that is a difference of two squares.
16. 100x4 – y6 15. x2 – 16
Alg1 Notes 7.5.notebook March 07, 2013
Factor each binomial that is a difference of two squares.
18. 64x4 – y6 17. 25x2 – 49
V. Application
19. A square piece of cloth must be cut to make a tablecloth. The area needed is (16x2 – 24x + 9) in2. The dimensions of the cloth are of the form cx – d, where c and d are whole numbers. Find an expression for the perimeter of the cloth. Find the perimeter when x = 11 inches.
When x = 11 in. the perimeter of the tablecloth is 164 in.