Question

Find the square of ( 5a + 7b )​

Answer 1

Here you go(⌒o⌒)❤

${(5a + 7b)}^{2} \\ we \: know \: that \: {(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy \\ so \: here \\ {(5a)}^{2} + {(7b)}^{2} + 2(5a)(7b) \\ 25 {a}^{2} + 49 {b}^{2} + 70ab$

Hope it helps (⌒o⌒)❤