University:
Bradley University
Course:
MTH 109 | College Algebra
Academic year:

2021
Views:

327

Pages:

1
Author:

Gudrunecg9m

Elementary Algebra Skill Solving Quadratic Equations by Factoring Solve each equation by factoring. 1)x 2 − 9x + 18 = 0 {3, 6} 2)x 2 + 5x + 4 = 0 {1, 4} 3)n 2 − 64 = 0 {8, - 8} 4)b 2 + 5b = 0 { - 5, 0} 5) 35n 2 + 22n + 3 = 0 6) 15b 2 + 4b − 4 = 0 { 3 1 − ,− 7 5 } 7) 7 p 2 − 38 p − 24 = 0 { } 2 2 − , 3 5 8) 3 x 2 + 14 x − 49 = 0 { } { } 7 , −7 3 4 − ,6 7 9) 3k 2 − 18k − 21 = 0 10) 6k 2 − 42k + 72 = 0 {7, −1} {3, 4} 11) x 2 = 11 x − 28 12) k 2 + 15k = −56 {7, 4} {−8, −7} 13) 3m 2 = −16m − 21 { 7 − , −3 3 } 15) x 2 + 17 x + 49 = 3 x {−7} 17) 2k 2 − 14 = −3k { } 7 − ,2 2 19) 10 x 2 − 26 x = −12 { } 3 ,2 5 14) 8 x 2 = 30 + 43 x { } 5 − ,6 8 16) m 2 = 2m {2, 0} 18) 3v 2 + 36v + 49 = 8v { 7 − , −7 3 } 20) 15 p 2 + 80 = −80 p { 4 − , −4 3 }