Show that if y=x^2 + 8x - 3 then y> -19 for all values of x

Select all of the following expressions that are equal to 2.5.

Convert the number to decimal form. 12) 312five a) 82 b) 30 c) 410 d) 1560 13) 156eight a) 880 b) 96 c) 164 d) 110 14) 6715eight a) 53,720 b) 3533 c) 117 d) 152

What is ha theorem a special case of?