Question

Q.6 If (x-2) is a zero of of x-4x2 + kx -8 find k.
Q.7 If ( x-2) and (x +3) are factors of x + ax? +bx-30, find a and b
Q.8 If x+y+ z = 8 and xy + y2+zx = 20 find the value of x +y+z3-37​

Answer 1

so sorry but how I can answer this I am so we can mathematics

Answer 2

Answer:

Q.6

Step-by-step explanation:

x-2 = 0

x=2

put the value of x in the equation

2-4*2+k*2-8

2-8+2k-8

-6+2k-8=0

2k= 8+6

2k= 14

so

k= 7