Solve using substitution. Show your work
x+2y = 5
x+y= 3
Video on substitution method
Solve the following using the elimination method
2x+3y=18
x+7y=9
Video on elimination method.
Expand the brackets
(2x+6)(3y-7)
Video on multiplying polynomials.
Solve the following quadratic equation
Video on splitting the middle term