Question

2 of {3 × 4 ÷ 2 + (4 – 3) – 5}.

Answer 1

Answer:

STEPS USING FACTORING

x

2

−4x−5=0

To solve the equation, factor x

2

−4x−5 using formula x

2

+(a+b)x+ab=(x+a)(x+b). To find a and b, set up a system to be solved.

a+b=−4

ab=−5

Since ab is negative, a and b have the opposite signs. Since a+b is negative, the negative number has greater absolute value than the positive. The only such pair is the system solution.

a=−5

b=1

Rewrite factored expression (x+a)(x+b) using the obtained values.

(x−5)(x+1)

To find equation solutions, solve x−5=0 and x+1=0.

x=5

x=−1

Answer 2

This is the answer of the question