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MAT0056 ADVANCED DEVELOPMENTAL ALGEBRA PRACTICE TEST 2 NAME:____________________ MUST SHOW YOUR WORK! Factor each trinomial completely. (Hint: Look for a GCF.) 1) Find the GCF (greatest common factor) for each list of terms. xy5, x2y3, x3y2z 13) 12x2 − 11x + 2 b) −14x4y, 7x2y, 28x3y 14) 6p2 + 7p − 10 a) Factor out the GCF from each polynomial. 15) 8x2 − 6x − 27 2) 12y3 – 16y2 – 8y 16) 15m3 + 24m2 + 9m 3) 18xy5 + 27xy3 − 45xy2 17) 9x2 − 30x + 25 Write the polynomial in descending order. Then factor out a GCF of "−1." 18) 81x2 + 72xy + 16y2 4) 15 − 2y − y2 Factor each binomial completely. Factor each polynomial by grouping. 19) 16x2 – 9 5) 3x + 15 + xy + 5y 20) 25x2 − 36y2 6) 4x2 8xy 7x + 14y 21) 3y2 − 48 Factor each trinomial. Solve each equation. 7) x2 14x + 24 22) 5x(x − 15) = 0 8) y2 6y 27 23) (5x − 2)(3x + 1) = 0 9) x2 + 3xy 40y2 Solve each equation by factoring. Factor each trinomial completely. (Hint: Look for a GCF.) 24) x2 + 7x − 18 = 0 10) 3a2 − 12a − 36 25) x2 − 2x = 24 11) x3 + x2 − 6x 26) 4x2 − 15x + 9 = 0 12) 2y4 + 20y3 + 32y2 © Palm Beach State 1 MAT0056 ADVANCED DEVELOPMENTAL ALGEBRA Answer Key 1a) xy2; 1b) 7x2y 14) (6p − 5)(p + 2) 2) 4y (3y − 4y −2) 15) (4x − 9)(2x + 3) 3) 9xy2 (2y3 + 3y −5) 16) 3m(5m + 3)(m + 1) 4) − (y2 + 2y − 15) 17) (3x − 5)2 5) (x + 5)(3 + y) 18) (9x + 4y)2 6) (x – 2y)(4x – 7) 19) (4x + 3)(4x − 3) 7) (x − 2)(x − 12) 20) (5x + 6y)(5x − 6y) 8) (y + 3)(y − 9) 21) 3(y + 4)(y − 4) 9) (x − 5y)(x + 8y) 22) x = 0, 15 10) 3(a + 2)(a − 6) 23) x = −1/3; 2/5 11) x(x − 2)(x + 3) 24) x = −9, 2 12) 2y2(y + 2)(y + 8) 25) x = −4, 6 13) (3x − 2)(4x − 1) 26) x = 3/4, 3 2 © Palm Beach State 2