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Find the value of X in Quadratic equations

Caldeo

x²=3(x+6)

Reply 1

Aleandra

x²=3(×+6)
3(6+6)=36
6²=36 therefore x=6
6²=3(6+6)

Reply 2

luis.hall

X(^2)=3(x+6)
This is actually simpler than it looks, you just gotta cancel things out evenly.
So to start with, I’d simplify the 3(x+6) by time song the three to both x and 6, making the equation x(^2)=3x+18, then you can just whittle each part down to turn it into (x=-3) (x+6)

Reply 3

davros

Original post by Caldeo

x²=3(x+6)

What are you thoughts on this?

I would start by multiplying out the bracket on the RHS and then rearranging into the standard form of a quadratic equation.

Then you can either look for a factorisation, or try completing the square, or use the quadratic formula to find the solution.

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Find the value of X in Quadratic equations

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