Find the sum of the coefficients in the polynomial 3(3x^7 + 8x^4 - 7) + 7(x^5 + 7x^2 + 5) when it is fully simplified.
Here guest,
In order to find the sum of the coefficients, you need to simplify.
3(3x7+8x4-7) + 7(x5+7x2+5)
= 9x7+24x4-21+7x5+49x2+35
So the sum of the coefficients are:
9+24+7+49 = 89
So the sum of the coefficients is 89
