Question

Add 3x³+2x²-5x+7,7x+5,8x²+9x-2 and x+5

Answer 1

Answer:

3x^3+2x^2-5x+7+7x+5+8x^2+9x-2+x-5

=3x^3 +(2x^2+8x^2)+(7x-5x+9x+x)+(7-2+5+5)

=3x^3+10x^2 +12x+15

Answer 2

Answer:

Here is your required answer

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