8 x square - 42 x minus 11 is equals to zero
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Answered by
3
Answer:
8x^2-42x-11=0
8x^2-44x+2x-11=0
4x(2x-11)+1(2x-11)=0
(4x+1)(2x-11)=0
x=-1/4
x=11/2
Answered by
0
Answer:
8x2-42*-11=0
8x2+42*11=42+420=462=0
8x2+462=0
8x2=0-462
x2=-462
x=-462square root
x=-21.4941
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