HELP ME PLEASE, will mark brainliest
What is (x2 + 6x - 3) + (2x - 10)

a
x^2 + 5x - 10
b
x^2 + 8x - 13
c
x^2 + 8x + 7
d
x^2 + 5x + 10

Aconvex octagon has interior angles that measures 73 degrees, 172 degrees, 132 degrees, 59 degrees, 154 degrees, 163 degrees, x degrees, 2x degrees find the value of the missing angles

What is the least common factor of 6 and 8

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°