Question

find the roots of quadratic equation y² = 4 are​

Answer 1

Answer:

${y}^{2} = 4 \\ {y}^{2} - 4 = 0 \\ {y}^{2} - {2}^{2} = 0 \\ (y + 2)(y - 2) = 0 \\ y = 2 \: or \: - 2$

orrrrr

y^2 = 4

y=√4

y = +-2