147k views
1 vote
Which are the solutions to the quadratic equation x^2=9x+6

User Bjeavons
by
8.2k points

1 Answer

4 votes
I will use a quadratic formula:


x^2=9x+6\ \ \ \ |-9x-6\\\\x^2-9x-6=0\\\\a=1;\ b=-9;\ c=-6\\\\b^2-4ac=(-9)^2-4\cdot1\cdot(-6)=81+24=105\\\\√(b^2-4ac)=√(105)\\\\x_1=(-b-√(b^2-4ac))/(2a);\ x_2=(-b+√(b^2-4ac))/(2a)\\\\x_1=(-(-9)-√(105))/(2\cdot1)=(9-√(105))/(2)\\\\x_2=(-(-9)+√(105))/(2\cdot1)=(9+√(105))/(2)
User Jacob Honeyhume
by
7.5k 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