Evaluate the expression 4 x 2 + 5 x z − y if x = − 3 and y = 2 and z = − 2

Answer 1

Hi Hana,

Your question is showing as an ESL (English as a Second Language) question. It's a good idea to re-post it in the Mathematics area on Wyzant.

Cheers,

Laurette

Answer 2

Hi Hana,

I can't tell if 'x' represents multiplication here, or if 'x' = -3 in the equation above.

Either way...

4(-3)(2) = -24

5(-3)(-2)-2=28

-24+28 = 4

Alternatively (with 'x' representing multiplication as opposed to the whole number -3):

4 x 2 + 5 x (-2) -2 = 8 + (-10) -2 = -4

I hope this helps!