Question

Subtract the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending powers of x. (-6.7x 2 + 2.3x y + 5.2) - (-14.9x 2 - 3.5x y + 7.1) please help i will mark the first person to answer this the brainliest 

Answer 1

Answer: Simplified form is given by

$8.2x^2+5.8xy-1.9$

Step-by-step explanation:

Since we have given that

$(-6.7x^2 + 2.3xy + 5.2) - (-14.9x^2 - 3.5xy + 7.1)$

We just need to subtract the following polynomials:

First we gather the like terms together:

$(-6.7x^2 + 2.3xy + 5.2) - (-14.9x^2 - 3.5xy + 7.1)\\\\=-6.7x^2+2.3xy+5.2+14.9x^2+3.5xy-7.1\\\\=-6.7x^2+14.9x^2+2.3xy+3.5xy+5.2-7.1\\\\=8.2x^2+5.8xy-1.9$

Hence, simplified form is given by

$8.2x^2+5.8xy-1.9$