How do you evaluate #Y=-4^{2}-6\times 4+17#?
1 Answer
Aug 3, 2017
Explanation:
Evaluate the expression using the order of operations as set out in the acronym PEMDAS
[P-parenthesis (brackets), E-exponents (powers), M-multiplication, D-division, A-addition, S-subtraction]
#"note that"-4^2=-(4)^2" and not "(-4)^2#
#rArr-4^2-6xx4+17#
#=-16-6xx4+17larrcolor(red)" exponents"#
#=-16-24+17larrcolor(red)" multiplication"#
#"now evaluate from left to right"#
#=-23#
