90.6k views
5 votes
3x(3x-1)-(3x+5)(3x-5)=3x+25

User Elderry
by
8.1k points

2 Answers

3 votes

Answer:

x=0

Explanation:


3x(3x-1)-(3x+5)(3x-5)=3x+25\\\\\text{Use the algebraic identity,}(a+b)(a-b)=a^2-b^2\\9x^2-3x-(9x^2-25)=3x+25\\9x^2-3x-9x^2+25=3x+25\\-3x=3x\\-6x=0\\x=0

User Rahul Khengare
by
9.2k points
5 votes

Answer:


\sf x=0

Explanation:


\sf 3x\left(3x-1\right)-\left(3x+5\right)\left(3x-5\right)=3x+25


\sf -3x+25=3x+25


\sf -3x+25-25=3x+25-25


\sf -3x=3x


\sf -3x-3x=3x-3x


\sf -6x=0


\sf (-6x)/(-6)=(0)/(-6)


\sf x=0

User Luck
by
7.3k 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