Find two numbers whos product is 8 and sum is -10
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let two no's be x,y
x×y=8-----(1)
x+y=-10
x=-y-10------(2)
equate 2in1
y(-y-10)=8
-(y)2-10y-8=0
(y)2+10y+8=0
equate in quadratic formula and substitute this value of y in equation 2
x×y=8-----(1)
x+y=-10
x=-y-10------(2)
equate 2in1
y(-y-10)=8
-(y)2-10y-8=0
(y)2+10y+8=0
equate in quadratic formula and substitute this value of y in equation 2
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