9. If A = 3x + 4y - 2x², B = -2x² + 3x + 15y, and C = 6y - x - 2x², find the value of A - B + C. 10. 10 questionFactorise: 15a²b + 25ab²c 11. Solve the following equation using the trial-and-error method: 3 21 zm = 28 12. In a class of 40 boys and girls, the number of girls is two-thirds the number of boys. Find the number of boys. 12. Ramesh's age is three years more than twice the age of Priya. If Ramesh's age is 25 years, find Priya's age. heplp
dont take points for silly reaseons like i dont know ok help
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Answer:
9) A-B+C= -2x^2-x-5y
10) 5ab(3a+5bc)
rest for you