If (X+a) is a factor of 2x²+2ax+5x+10 find a
Answers
Answered by
4
x+a=0
x=-a
2×(-a) ²+2a×-a+5×-a+10=0
2a²-2a²-5a+10=0
-5a+10=0
-5a=-10
a=-10/-5=2
Similar questions