Question

find the sum
${5x}^{2} - 6x - 7 \: and \: {4x}^{2} + 3x - 5$
help me​

Answer 1

Step-by-step explanation:

$\huge\sf\purple{Answer-:}$-5x2 - 8x + 7) - (5x2 - 4)

= -5x2 - 8x + 7 - 5x2 + 4

= -5x2 - 5x2 - 8x + 7 + 4

= -10x2 – 8x + 11

[/tex]