Question

(7m - 8n)² + (7m + 8n)²
SIMPLIFY
PLS DON'T BE GREEDY FOR POINTS AND WRITE SOME DUM STUFF​

Answer 1

GIVEN :

• $\bf{ (7m-8n)^2+(7m+8n)^2}$

TO FIND :

• Simplified form .

$\longrightarrow\sf (7m-8n)^2+(7m+8n)^2$

$\longrightarrow\sf \bigg[(7m)^2-2 \times 7m \times 8n+(8n)^2 \bigg]+\bigg[(7m)^2+ 2 \times 7m \times 8n+(8n)^2 \bigg]$

$\longrightarrow\sf \bigg(49m^2-112mn+64n^2 \bigg)+\bigg(49m^2+112mn+64n^2 \bigg)$

$\longrightarrow\sf 49m^2-112mn+64n^2 + 49m^2 + 112mn+64n^2$

$\longrightarrow\sf 49m^2 + 49m^2-\cancel{112mn} + \cancel{112mn} + 64n^2 +64n^2$

$\longrightarrow\underline{\boxed{\bf {98m^2+128n^2}}}$

Answer 2

Answer:

98m^2+128n^2

Step-by-step explanation:

the solution is in the picture