Question

${z}^{2} - 12z - 45$
​

Answer 1

then z= -3

z=15

Hope you understand the answer

and mark it as brilliant one

Answer 2

$\huge\underbrace\mathcal\pink{QUESTION}$

Factorise the x²+7x+ 12

$\huge\underbrace\mathcal\pink{ANSWER}$

$\longrightarrow$ z²-12z-45

$\longrightarrow$ z²-(15-3)z-45

$\longrightarrow$ z²-15z+3z-45

$\longrightarrow$ z(z-15)+3(z-15)

$\longrightarrow$ (z-15)(z+3)

$\huge\boxed{\fcolorbox{pink}{pink}{Thank \: You}}$