Question

samuel found the difference of the polynomials.\\((15x^2 + 11y^2 + 8x) - (7x^2 + 5y^2 + 2x) = \square x^2 + 6y^2 + 6x\\)\
what value is missing from his solution?\
dropdown with options 8, 9, 21, 22

Explanation:

Step1: Distribute the negative sign

$(15x^2 + 11y^2 + 8x) - 7x^2 - 5y^2 - 2x$

Step2: Combine like terms for $x^2$

$15x^2 - 7x^2 = 8x^2$

Answer:

8