Anonymous
Anonymous asked in Science & MathematicsMathematics · 10 years ago

Algebra, solving for r?

r^2-11r+30=0

solve for r

3 Answers

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  • 10 years ago
    Favorite Answer

    r^2 - 5r - 6r + 30 = 0

    r(r - 5) - 6(r - 5) = 0

    (r - 6)(r - 5) = 0

    r - 6 = 0 or r - 5 = 0

    r = 6 or r = 5

  • 10 years ago

    r=6

    r=5

  • Como
    Lv 7
    10 years ago

    ( r - 6 ) ( r - 5 ) = 0

    r = 6 , r = 5

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