3 years ago

Please help me if you can

Mathematics

1 answer:

STALIN [3.7K]3 years ago

7 0

Answer:

12. 55x^4-30x^3+45x^2

13. q^2-2q-24

14. e^2-81

15. w^2-12w+36

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3 years ago

6x-2y=33<br> 4x+3y=9 What would x and y be?

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$6x-2y=33 \\\\ 6x=33+2y \\\\ \boxed{x=\frac{2y+33}{6}} \\\\ 4x+3y=9 \\\\ 4*\frac{2y+33}{6}+3y=9 \\\\ 2*\frac{2y+33}{3}+3y^{(3}=9^{(3} \\\\ 2(2y+33)+9y=27 \\\\ 4y+66+9y=27 \\\\ 13y=27-66 \\\\ 13y=- 39 \\\\ \boxed{y=-\frac{39}{13}=-3} \\\\ x=\frac{2*(-3)+33}{6} \\\\ x=\frac{-6+33}{6} \\\\ x=\frac{27}{6} \\\\ \boxed{x=\frac{9}{2}}$