Question

for what values of q the quadratic equations x square -qx + 4 has equal roots​

Answer 1

Answer:

I will try my best to keep it simple

Answer 2

${x}^{2} - qx + 4 = 0$

The factors of 4 are 2×2,

${x}^{2} - 2x - 2x + 4 = 0$

$x(x - 2) - 2(x - 2) = 0$

$(x - 2)(x - 2) = 0$

$x = 2$

The value of q = 4