Answer:
Explanation:
Discriminant=[tex]b^2-4ac[/tex]
substituting given in the formula
a=1 b=-7 c=-8
[tex]=(7)^2-4(1)(-8)[/tex]
=49 + 32
=81
Quadratic formula=b±[tex]\sqrt{D[/tex]/2a
-(-7)±[tex]\sqrt{81}[/tex]/2(1)
7±9/2
now splitting we get
7+9/2 and 7-9/2
then we get x=8 and x=-1
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Answer:
Explanation:
Discriminant=[tex]b^2-4ac[/tex]
substituting given in the formula
a=1 b=-7 c=-8
[tex]=(7)^2-4(1)(-8)[/tex]
=49 + 32
=81
Quadratic formula=b±[tex]\sqrt{D[/tex]/2a
-(-7)±[tex]\sqrt{81}[/tex]/2(1)
7±9/2
now splitting we get
7+9/2 and 7-9/2
then we get x=8 and x=-1