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How do you solve 2x + 5 = 13?
x = 4 Step by step: 1. view more
Algebra
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What is the quadratic formula?
x = (-b ± √(b²-4ac)) / 2a Used to solve equations in the form: ax² + bx + c = 0 The discriminant (b²-4ac) determines solutions: - Positive: 2 real solutions - Zero: 1 real solution - Negative:... view more
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How do you solve 3x - 7 = 2x + 4?
x = 11 Step by step: 1. view more
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What is the slope-intercept form?
y = mx + b Where: - m = slope (rise/run) - b = y-intercept (where line crosses y-axis) Example: y = 2x + 3 - Slope: 2 (rises 2 for every 1 right) - Y-intercept: 3 view more
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What is the FOIL method?
FOIL = First, Outer, Inner, Last Used to multiply two binomials (a+b)(c+d): - First: a × c - Outer: a × d - Inner: b × c - Last: b × d Example: (x+2)(x+3) = x² + 3x + 2x + 6 = x² + 5x + 6 view more
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How do you factor x² + 5x + 6?
x² + 5x + 6 = (x + 2)(x + 3) Method: 1. view more
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How do you solve |x - 3| = 5?
x = 8 or x = -2 Absolute value equations |A| = B have two solutions: Case 1: x - 3 = 5 x = 8 Case 2: x - 3 = -5 x = -2 view more