2x times 3x is 6x to the second
2x times -2 is -4x
5 times 3x is 15x
-2 times 5 is -10
6x to the second plus 9x minus 10
4+√x=10 ← Subtract 4 from both sides
√x = 6 ← square both sides to get rid of the square root
x = 36 or B
Step-by-step explanation:
here,
x^2 -3xy-18xy^2
=x^2-(6-3)xy-18xy^2
=x^2-6xy+3xy-18y^2
=x(x-6y)+3y(x-6y)
=(x-6y)(x-3y)

That should be the final answer. If you need help with the distribution process I can explain that separately if needed. If not, hope this helps!
It cancels out and gets 0