How do you evaluate #- q ^ { 2} - r ^ { 2} + 3s# if # q = 9,r = - 6,s = - 20#?
1 Answer
Sep 29, 2017
Explanation:
#"substitute the given values for the variables into the "#
#"expression"#
#rArr-q^2-r^2+3s#
#=-(9)^2-(-6)^2+(3xx-20)#
#=-81-36-60#
#=-177#
