Question

Evaluate
http://www.stratfordk12.org/images/customer-files/SecondaryEducation/2013Enteringcollegealgandtrigsummer.pdf
page 6 question 1
1)x(y/2+3z^2)-2x if x=1/2, y=4, z=-2

Answer 1

x(y/2 + 3z^2) - 2x (x = 1/2, y = 4, z = -2)
1/2(4/2 + 3(-2^2)) - 2(1/2)
1/2 (2 + 3(4)) - 2
1/2( 2 + 12) - 2
1/2(14) - 2
7 - 2
5 -- answer