Question

If A = -n + 5n^2 +9 and B = 3 - n, find an expression that equals 2A - 3B
in standard form.

Answer 1

Answer:

10n² + 3n + 7

Step-by-step explanation:

2A - 3B = 2.( -1 + 5n² + 9) - 3.(3 - n)

= -2 + 10n² + 18 - (9 - 3n)

= 10n² + 16 -9 + 3n

= 10n² + 3n +7