Algebramedium · Past Paper
The product of two consecutive integers is 20. Find the integers.
A4, 5
B-4, -5
CBoth a and b
DNone
✓ Correct Answer: C — Both a and b
x(x+1)=20 → x^2+x-20=0 → (x+5)(x-4)=0. x=4 (4,5) or x=-5 (-5,-4).
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