Question

Please help. Are the expressions 8a² - 4b + 7a² and 5(3a² - 2b) + 6b equivalent? Explain your reasoning.

Answer 1

Yes

Explanation:

Expression 1 : 8a² - 4b + 7a² = 15a² - 4b

Expression 2 : Expand the equation

• 5(3a² - 2b) + 6b
• 15a² - 10b + 6b
• 15a² - 4b

From simplifying both expressions, we can see that they are equal

Answer 2

Yes.

8a^2-4b+7a^2= 15a^2-4b

5(3a^2-2b)+6b=15a^2-4b

Explanation: