How exactly do I solve this equation?
x2 - 12x = -36
Stacey Warren - Expert brainly.com
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\[x^2-12x+36=0\] now solve the quadratic
gives x=6 can yuo see why
you can use the quadratic formula
or you can factor it
you can also, look at its graph and see where it crosses the x axis
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here yuo can factor the eqn, Do you know how to do this?
I don't understand how you got x = 6...
I'm sorry... I'm so confused. /:
Oh! Wait I think I get it!!
Took me a little bit :P Thank you both a ton!!
if you factorise the equation you get
so when (x-6)=0 x=6
Do you see
Here is how I practice factorising write the factorised end point i.e. (x+3)x+4)
and expand the brackets to give\[x^2+4x+3x+12 \rightarrow x^2+7x+12\]
now |I take \[x^2+7x+12\] and work backwards because I know it will definitely factorise
wow that's the hard way! but it does always work. Try to factorise it before going through all this stress
just presenting multiple ways to solve it. Quadratic formula works 100% of the time, factoring does not