119,162 views
20 votes
20 votes
3x(3x-1)-(3x+5)(3x-5)=3x+25

User Deepshikha Puri
by
2.6k points

2 Answers

29 votes
29 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 Paullem
by
2.8k points
15 votes
15 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 Girish Kolari
by
2.8k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.