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OpenStudy (anonymous):
Solve the equation by completing the square. x^2 + 10x + 21 = 0 x= (smaller value) x= (larger value)
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OpenStudy (saifoo.khan):
smaller, -7 larger -3
OpenStudy (anonymous):
x^2+10x+21=x^2+10x+25-4=0 (x+5)^2-4=0 (x+5)^2=4 So x+5=2 implies x=-3 or -(x+5)=2 implies x=-7
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