Resh Skysmart provides digital versions of the Makarychev 8th-grade textbook with interactive explanations.
x2−92x+6the fraction with numerator x squared minus 9 and denominator 2 x plus 6 end-fraction Use the difference of squares formula
xv=−-42⋅1=42=2x sub v equals negative the fraction with numerator negative 4 and denominator 2 center dot 1 end-fraction equals four-halves equals 2 Plug back into the original equation: Resh Skysmart provides digital versions of the Makarychev
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2x+6=2(x+3)2 x plus 6 equals 2 open paren x plus 3 close paren
x2−9=(x−3)(x+3)x squared minus 9 equals open paren x minus 3 close paren open paren x plus 3 close paren Resh Skysmart provides digital versions of the Makarychev
Divide both the numerator and denominator by