Question

for what value of k, 1/4 is a root of the quadratic equation kx2 - x + 1/8 = 0?​

Answer 1

Solution

$\sf \: x=2 \: one \: of \: the \: root \: of \: kx^2 −x+1/8=0$

$\sf \: f(2)=0$

$\sf \: f(x)=kx^2 −x+1/8$

$\sf=k(2)^2 −x×2+1/8=0$

$\sf \implies4k−28+8=0$

$\sf \implies4k=20$

$\sf \: ∴k=5$

$\fbox\red{hope its helpful dear❤}$

Answer 2

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate.