4*5-3*4
20-12
=8
Just plug in the numbers and solve. Remember that you multiply before you subtract.
Angles and sides
meaning the length of the sides of the triangle and all the angles <span />
9x³-33x²-54x-30 =
3(3x³-11x²-18x-10) =
3(x-5)(3x²+4x+2) so one zero is 5. use the quadratic formula to determine the other 2 roots are a double root at -⅔