Question

question 4,7 please solve fast​

Answer 1

Sol4x2-3x2+3x+k=0
{3}2-3{2}2+3{2}+k=0
9-12+6+k=0
15-12+k=0
3+k=0
k=-3
sol7=2x-1=0
2x=1
x=1/2
now put the value of x in the equation u will get the answer