exam Maths Puzzle Numerical Ability

How do you factor this trinomial----------------------------------------------
{{{{x^2+30x+216=0}}}
Thanks so much!

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exam Other Question

what is the slope of the line that bisects the 90 degrees angle betweeb the +x and +y axes? between the -x and +y axes? I am a parallelogram with an area of 80cm2 and a height of 6. What is the length of my base?