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Simplifying 4 = 2x2 + bx + 5 Reorder the terms: 4 = 5 + bx + 2x2 Solving 4 = 5 + bx + 2x2 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1bx' to each side of the equation. 4 + -1bx = 5 + bx + -1bx + 2x2 Combine like terms: bx + -1bx = 0 4 + -1bx = 5 + 0 + 2x2 4 + -1bx = 5 + 2x2 Add '-4' to each side of the equation. 4 + -4 + -1bx = 5 + -4 + 2x2 Combine like terms: 4 + -4 = 0 0 + -1bx = 5 + -4 + 2x2 -1bx = 5 + -4 + 2x2 Combine like terms: 5 + -4 = 1 -1bx = 1 + 2x2 Divide each side by '-1x'. b = -1x-1 + -2x Simplifying b = -1x-1 + -2x
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