Question

simplifique as expressao 3x^2+x^2-7x^2+5x^2

Answer 1

$3x^2+x^2-7x^2+5x^2\to\\\\ 3x^2+x^2+5x^2-7x^2\to\\\\ 9x^2-7x^2\to\\\\ \boxed{2x^2}$

Answer 2

= 3x² + x² - 7x² + 5x²

=  4x² - 2x²

= 2x²

R.: 2x²