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Anika [276]
3 years ago
5

-3² = -1*3² = -1 * 9 = -9 (order of operations) while (-3)² = (-3)(-3) = +9 or 9

Mathematics
1 answer:
mixas84 [53]3 years ago
6 0

Answer:   20

Step-by-step explanation:

Assuming your question is:

Z² - X² - XY     X = -2, Y = 3, Z = -4

Substitute values

(-4)² - (-2)² - {(-2)(3)}

{(-4)(-4)} - {(-2)(-2)} - (-6)

(16) - (4) + 6

16 - 4 + 6

20

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Step-by-step explanation:

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2 years ago
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Assoli18 [71]

Answers

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Step-by-step explanation:

(1) 6 = a/4 + 2

4 = a/4 (It is because when you bring +2 over to the left it will become 6 -2)

a = 16 (it is because of the fraction, so when you bring the divisor over it becomes x 4)

The following questions same as qns 1 too

(2) -6 + x/4 = -5

x/4 = 1

x = 4

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1 = r/20

20 = r

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4 years ago
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