5+4m2+7m−m2+3m−13Which of the following is equivalent to the given expression?Choose 1 answer:(A) (3m−4)(m+2)(B) (3m+4)(m−2)(C) (3m−2)(m+4)(D) (3m+2)(m−4)
Q. 5+4m2+7m−m2+3m−13Which of the following is equivalent to the given expression?Choose 1 answer:(A) (3m−4)(m+2)(B) (3m+4)(m−2)(C) (3m−2)(m+4)(D) (3m+2)(m−4)
Rephrase Question: First, let's rephrase the "What is the equivalent expression for the given algebraic expression?"
Combine Like Terms: Combine like terms in the expression 5+4m2+7m−m2+3m−13. 4m2−m2=3m2 (combining the m2 terms) 7m+3m=10m (combining the m terms) 5−13=−8 (combining the constant terms) So the simplified expression is 3m2+10m−8.
Factor Simplified Expression: Now, we need to factor the simplified expression 3m2+10m−8. We are looking for two numbers that multiply to (3m2)(−8)=−24m2 and add up to 10m.
Find Factors: The two numbers that meet these criteria are 12m and −2m because 12m×−2m=−24m2 and 12m+−2m=10m. So we can write the expression as 3m2+12m−2m−8.
Group and Factor: Now, we factor by grouping. Group the first two terms and the last two terms:(3m2+12m)+(−2m−8)Factor out the common factor from each group:3m(m+4)−2(m+4)
Common Factor: Since both terms have a common factor of (m+4), we can factor it out: (3m−2)(m+4)
Compare and Choose: We compare the factored expression (3m−2)(m+4) with the answer choices:(A) (3m−4)(m+2)(B) (3m+4)(m−2)(C) (3m−2)(m+4)(D) (3m+2)(m−4)The correct answer is (C) (3m−2)(m+4).