How do you find the product #-8(-11)#?

Question

1788 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-01-03T08:42:36

#+88#

#-8(-11)#

deal with the numbers and signs separately

#8xx11=88#

use the scheme below to decide the correct sign

#+xx+=+#

#-xx- =+#

#+xx - =-#

#-xx+ =-#

#- xx - " "#so the final answer will be#" " +88#

Summery:
When multiplying or dividing, if the signs are the same the answer is positive. If the signs are not the same the answer is negative.

If you have more than 2 signs group them into pairs repeating the process until you end up with just two pars and thus the final answer.

#color(blue)(color(red)([color(white)(.)(-1)xx(+1)color(white)(.)])xx(-1)" "=" "color(red)([-1])xx(-1) color(green)(" " = +1))#