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WITCHER [35]
3 years ago
15

Two lines intersecting at a right angle PLEASE HELP!

Mathematics
1 answer:
Nataly_w [17]3 years ago
4 0

Answer:

C

Step-by-step explanation:

if line intersect at right angle it's perpendicular

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Answer:

The product of (a+b)(a-b)  is a^2 - b^2

Step-by-step explanation:

Use FOIL to explain how to find the product of (a + b)(a − b)

FOIL is

Multiply First terms : a*a = a^2

Multiply Outside terms : a* -b = -ab

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combine like terms

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Shortcut is we apply an identity

a^2 - b^2 = (a+b)(a-b)

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