Answer:
are zeroes of given quadratic equation.
Step-by-step explanation:
We have been a quadratic equation:

We need to find the zeroes of quadratic equation
We have a formula to find zeroes of a quadratic equation:

General form of quadratic equation is 
On comparing general equation with b given equation we get
a=2,b=-10,c=-3
On substituting the values in formula we get


Now substituting D in
we get




Therefore, 
560+ 147= 707
14(40)= 560
14+ 14(1/2)=21
21(7)= 147
Answer:
B
Step-by-step explanation:
Since the triangles are similar then the ratios of corresponding sides are equal, that is
=
( cross- multiply )
12 ? = 108 ( divide both sides by 12 )
? = 9 → B
8 is 7 more than the cube of '<em><u>1</u></em>' .
Hope it helps...
Regards;
Leukonov.