Please simplify the following expressions:
(x^2+3x-9)+(-4x^2+2x-3)
(x-2)(3x+5)
(r+3)^2
Thank you for your help.
i. -3x^2+5x-12
ii. 3x^2-10
iii. r^2+6r+9
(x^2+3x-9)+(-4x^2+2x-3)
(x-2)(3x+5)
(r+3)^2
Thank you for your help.
ii. 3x^2-10
iii. r^2+6r+9