MaxWong

1/8 = 1/10 + 1/50 + 1/200 = 0.125

$\quad y(5x^2+2x)-x(2y-6y^2)\\ =5x^2y+2xy-2xy+6xy^2\\ =5x^2y+6xy^2$

$\dfrac{\sqrt3}{\sqrt{15}}\\ =\dfrac{\sqrt3}{\sqrt3\times\sqrt5}\\ =\dfrac{1}{\sqrt5}\\ =\dfrac{\sqrt5}{5}$

f(x) = 2x + 2(-x) = 2x - 2x = 0.

$+5-(-9)+(+3)\\ =5 + 9 + 3\\ = 17$

Number = 100C7 = 16007560800. :)

Use the calculator on this site!! The calculator is really useful!!

$7\left(\left(18-6\right)-6\right)\\ = 7(12-6)\\ = 7(6)\\ =42$

magnitude of cU

= c (magnitude of U)

= -3($\sqrt{5^2+(-12)^2}$)

= -3(13)

= -39.

Use the format of a/b for $\dfrac{a}{b}$