What equation has solutions of 5 and 8?
x = 5 and x = 8 {set each solution equal to x}
x + 5 = 0 or x  8 = 0 {added 5 and subtracted 8} (x + 5)(x  8) = 0 {multiplied together and set equal to zero} x²  3x  40 = 0 {used FOIL method or distributive property} f(x) = x²  3x  40 {wrote as a function} Ask Algebra House
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