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Arturiano [62]
2 years ago
6

If x + y = 10 and x - y = 4, find the value of x² - y²

Mathematics
2 answers:
morpeh [17]2 years ago
8 0

Answer:

x²-y² = 40

Step-by-step explanation:

Factorising x²-y²:

x²-y² = (x+y)(x-y)

This is due to the property that states:

a²+b² = (a+b)(a-b)

Substituting the given values into the above equation:

x²-y² = (10)(4)

= 40

Hence, x²-y² = 40

<em>Hope this helps and be sure to have a wonderful time ahead at Brainly! :D</em>

kondaur [170]2 years ago
3 0

Answer:

x² - y²=40 or 7²-3²=40

Step-by-step explanation:

if x=7 that would make y=3

7+3=10 and 7-3=4

7x7=49

3x3=9

49-9=40

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Answer:

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The total cost of renting a truck from Company A can be expressed as;

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replacing;

Total rental cost(Company A)=70+0.5 m...equation 1

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