2 years ago

Help me with this question plz thx!!

Mathematics

1 answer:

Alborosie2 years ago

8 0

Answer:

9x² - 9y + 9

Step-by-step explanation:

Step 1: Write out expression

3 - 2y - 1 + 5x² - 7y + 7 + 4x²

Step 2: Combine like terms (x²)

9x² + 3 - 2y - 1 - 7y + 7

Step 3: Combine like terms (y)

9x² - 9y + 3 - 1 + 7

Step 4: Combine like terms (constants)

9x² - 9y + 9

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2 years ago

Help me with this question plz thx!!​

Help me with this question plz thx!!