Find the value of #(-5)^2+4*-3#?

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Answer 1 · 2018-04-14T19:07:51

#13#

#(-5)^2 + 4 * -3#

Using PEMDAS, we know the order of solving expressions like this one.
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So the first thing we need to do is simplify the exponent:
We know that #(-5)^2# is the same thing as #(-5)(-5)#, which equals #25#.

Then we know we have to multiply #4 * -3#, which equals #-12#.

So our expression is now:
#25 - 12#

Which simplifies to:
#13#

Hope this helps!

Answer 2 · 2018-04-16T17:50:16

#=13#

There are TWO terms in this expression. Simplify each to a single answer which can be added or subtracted in the last step.

Within each term
- brackets have to be done first, then posers and roots
- then powers and roots
- then multiply and divide

#color(blue)((-5)^2) " "color(magenta)(+4xx(-3)#

#=color(blue)(25 " "color(magenta)(+(-12)#

#=color(blue)(25) " "color(magenta)(-" "12)#

#=13#