MATH - GRADE 9
A. x² - 16x = 30 {8 ± √94}
1. Completing the square
B. x² + 4x - 5 = 0 {-5, 1}
2. Factoring
A. x² - 16x = 30 {8 ± √94}
1. Completing the square
B. x² + 4x - 5 = 0 {-5, 1}
2. Factoring
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Step-by-step solving: Completing the Square
x² - 16x = 30
x² - 16x + (-8)² = 30 + (-8)²
x² - 16x + 64 = 30 + 64
(x - 8)² = 94
√(x - 8)² = √94
x - 8 = ± √94
x = 8 ± √94
Step-by-step solving: Factoring
x² + 4x - 5 = 0
(x - 1)(x + 5) = 0
x - 1 = 0
x = 1
x + 5 = 0
x = -5