Question

ANSWER CORRECT AND GET 10 POINTS+THANKS+5 STAR RATING AND BRAINLIEST
BUT IT SHOULD BE HANDWRITTEN ON A PAPER! DO FAST! ONLY CORRECT ANSWERS!!

Answer 1

2nd question is imperfect....

Answer for first one is in the pic....I hope it is correct...thank you....

Answer 2

❣️❣️$\textbf{\underline{\underline{\large{\pink{Step by step Explanation:-}}}}}$

Sum of $\mathtt{(9b^{2}-3c^{2}) and (2b^{2}+bc-2c^{2})}$

$\mathtt{=(9b^{2}-3c^{2})+ (2b^{2}+bc-2c^{2})}$

$\mathtt{=9b^{2}-3c^{2}+ 2b^{2}+bc-2c^{2}}$

$\mathtt{=11b^{2}-5c^{2}+bc}$

And the Sum of $\mathtt{(2b^{2}-2bc-c^{2}) and (c^{2}+2bc-b^{2})}$

$\mathtt{(2b^{2}-2bc-c^{2})+(c^{2}+2bc-b^{2})}$

$\mathtt{=2b^{2}-2bc-c^{2}+c^{2}+2bc-b^{2}}$

$\mathtt{=b^{2}}$

Since,,

On substracting the sum of $\mathtt{(9b^{2}-3c^{2}) and (2b^{2}+bc-2c^{2})}$ from the sum of $\mathtt{(2b^{2}-2bc-c^{2}) and (c^{2}+2bc-b^{2})}$

Hence,,

$\mathtt{(11b^{2}-5c^{2}+bc)-b^{2}}$

$\mathtt{=11b^{2}-5c^{2}+bc-b^{2}}$

$\mathtt{=10b^{2}-5c^{2}+bc}$

Hence the answer is,,,

$\mathtt{10b^{2}-5c^{2}+bc}$

$\textbf{\underline{\small{\red{Hope it helps you}}}}$

$\textit{\underline{\small{\green{please mark it as Brainliest answer.. thanks}}}}$