1, Tính:
a,√27 + 7√5 : √2

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

I’m really confused and need your assist me with this question i’ve never been taught

Side xy of triangle xyz is extended to point w, creating a linear pair with ∠wyz and ∠xyz. measure of an exterior angle what is the value of x? 64 80 100 180