3 years ago

HELP ASAPPPPPPP PLZZZZZZZ

Mathematics

1 answer:

Annette [7]3 years ago

7 0

Answer:

Step-by-step explanation:

If you added x to the equation, then it would become x²+4x+9=0, which is a perfect quadratic square

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How to solve this substitution

Lena [83]

-5x+4y=11
substitute for x which is 5
(-5)(5)+4y=11

simplify :
4y-25=11

add 25 on both sides
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the 25 cancels out

so it would be 4y=36
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which gives you (5,9)
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