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Ainat [17]
3 years ago
11

(TUTORS WHERE R U?? KIDS NEED HELP LIKE ME!! ILL GIVE BRAINLYY)

Mathematics
2 answers:
KengaRu [80]3 years ago
6 0

Answer:

11. 10x^2 - 13x - 3

12. 5x^2 + 18x + 5

Step-by-step explanation:

11. Product means multiplication, so you can multiply (5x + 1) and (2x - 3).

(5x + 1) * (2x - 3) - Using the FOIL (First+Outer+Inner+Last)

So: (5x*2x) + (5x*-3) + (1*2x) + (1*-3)\\10x^{2} -15x + 2x -3\\10x^{2} -13x -3

12. 3x^{2} + 8x - 1 + 2(x^{2} +5x + 3) (So, you distribute the 2 to x^2 + 5x + 30, then combine like terms).

3x^{2} + 8x - 1 + 2(x^{2} +5x + 3)\\3x^{2} + 8x - 1 + 2x^{2} +10x + 6\\(3x^{2} +2x^{2}) + (8x + 10x) + (-1+6)\\5x^{2} + 18x + 5

Hopefully, this helped you. Good luck & have a good day!

BartSMP [9]3 years ago
5 0

Answer:

11. 10x^2 - 13x - 3

12. 5x^2 + 18x + 5

Step-by-step explanation:

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