Question

a square + 4 is equal to 4​

Answer 1

a² + 4 = 4

a² = 4 - 4

a² = 0

a= √0

a = 0

HERE IS YOUR ANSWER

Answer 2

${a}^{2} + 4 = 4 \\ {a}^{2} = 4 - 4 \\ {a }^{2} = 0 \\ a = 0$

is the answer..