Question

how to factorise z^2-4​

Answer 1

Answer:

+2 or -2

Step-by-step explanation:

z^2 -4 = 0

z^2 = 4

z = plus minus root under 4

z = + 2 or -2

Answer 2

$\huge\mathcal\color {blue}♢AnSwEr♢$

☆Given☆

${z}^{2} - 4$

☆Factorization☆

${z}^{2} - 4 = 0$

${z}^{2} = 4$

$\huge\mathcal\color {grey}Might\:Help$