Question

expand using identities (7m+5n)^2​

Answer 1

Answer:

49m²+25n²+70mn

Step-by-step explanation:

by using Identity (a+b)²=a²+b²+2ab

Refer attached image.

Answer 2

Step-by-step explanation:

(7m+5n)²

EXPAND THE SQUARE

$\huge \red{(7m + 5n)(7m + 5n)}$

DISTRIBUTE

$\huge \green{7(7+5)+5(7+5)}$

DISTRIBUTE

$\huge \pink{49m²+35+5(7+5)}$

DISTRIBUTE

$\huge{49m²+35+35+25n²}$

COMBINE LIKE TERMS

$\huge \blue{49m²+70+25n²}$

$\huge solution$

$\huge \fbox \red{49m²+70mn+25n²}$

HOPE IT'S HELP YOU ❤️✌️❤️