What is the sum of 3x2 - 5x + 12 and 5x2 - 3x +6?
Answer:
[tex]8x {}^{2} - 8x + 18[/tex]
Solution:
Add the expressions
[tex]3x2 - 5x + 12 + 5x2 - 3x + 6[/tex]
Add the 3x² and 5x²
[tex]8x {}^{2} - 5x + 12 - 3x + 6[/tex]
Subtract the 3x from –5x
[tex]8x {}^{2} - 8x + 12 + 6[/tex]
Add 12 and 6
[tex]8x {}^{2} - 8x + 18[/tex]
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