35.6k views
4 votes
Workout the value for 3x^2-5y

when x=3 and y=4, i think the answer is 61 because :

3*3=9,
9^2=81,
5*4=20,

81-20=61


I just want to make sure that my answer is correct, can you pls tell me if it’s correct? I’ll give you 10 points hehe

1 Answer

6 votes
Remember to do PEMDAS so your answer is not correct, since you multiplied before doing the parentheses/exponents.

Step-by-step explanation:
3(3)^2- 5(4)
= 3(9) - 5(4)
= 27 - 20 = 7
User Crthompson
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories