Question

subtract 2x^2-4x^2+3 and 3x^2+7x^2-9​

Answer 1

$\huge{\underline{\underline{\mathfrak{Answer : }}}}$

The answer is -12x² + 12

__________________

In the above question we have to subtract 2x² - 4x² + 3 and 3x² + 7x² - 9.

$\implies$ Firstly, we should add the liked terms in both of the above equations.

$\implies{\sf{The \ equations \ become \ -2x^{2} + 3 and \ 10x^{2} - 9}}$

Now,

We will subtract the liked terms from both.

$\sf{\rightarrow -2x^{2} + 3 - (10x² - 9)} \\ \sf{\rightarrow -2x² + 3 - 10x² + 9} \\ \sf{\rightarrow -12x² + 12}$