![mangowammy](/avatars/22806.jpg)
mangowammy
25.11.2021 •
Mathematics
Evaluate this expression when c= -2 and d= 2:
Solved
Show answers
More tips
- H Health and Medicine Discover the Hidden Principles and Real Results of the Japanese Diet...
- H Health and Medicine Understanding Pregnancy Tests: What You Need to Know?...
- H Health and Medicine What Makes a Man a Man?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
Answers on questions: Mathematics
- M Mathematics An exponential function is graphed below. Activity 1 of 2 Which equation could represent this graph? A. Y=2xB. y = -2x C. y=2‐x D. y=x²-2Eric doesn t have a graphing...
- M Mathematics There is also none of the above or all of the above, someone please help...
- M Mathematics Which exponential function has an x-intercept?...
- M Mathematics Determine the exact area of the rectangle of smallest area that can contain the parallelogram shown...
- M Mathematics Three support beams for a bridge form a pair of complementary angles (2x-20) (4x-10). Find the measure of each angle....
- M Mathematics The equation for a circle is (x + 2)2 + (y – 5)2 = 9. What is the radius of the circle? | What is the x-coordinate of the circle s center? What is the y-coordinate of...
- M Mathematics What is the slope of a line passing through the points (1, 8) and (-2, -1)?...
- M Mathematics Need someone to find the x for this problem please...
- M Mathematics Net pay equals gross pay minus taxes withheld...
- M Mathematics Which of the following equations can be used to find the measure of the missing side x?...
Ответ:
refer to steps for answer!
Ответ:
Step-by-step explanation:
you just have to put the given values in place of the variable names and then simply calculate.
(-2² + 2²) - 2(-2² - 2²) = (4 + 4) - 2(4 - 4) = 8 - 2×0 = 8
so, B is the right answer.
please remember the correct sequence of operations :
first are brackets.
then exponents.
then multiplications and divisions.
and then (at last) additions and subtractions.
and also please remember : multiplying a negative number with a negative number creates a positive result.
that is of course also true for squaring a negative number, as ² just means that the negative number is multiplied with itself.
now you also know the result of -2³, right ?
as this means -2 is multiplied 3 times by itself. what does that do to the sign ?
-2 × -2 = 4 (positive).
but now we have to multiply a third time
4 × -2 = -8 (because multiplying a positive number with a negative number creates a negative result).
Ответ:
y=10
Step-by-step explanation: