Question

find the zero of the polynomial-x^2+4x+5​

Answer 1

x+5)(x−1)=0

x+5=0⇒x=−5

x−1=0⇒x=+1

Answer 2

Answer:

1 and -5

Step-by-step explanation:

${x}^{2} + 4x + 5 =0\\ {x}^{2} + 5x - x + 5 = 0\\ x(x + 5) - 1(x + 5)=0\\ (x + 5)(x - 1) =0\\ x = 1 \\ x = - 5$