Question

please answer this questions copy Mai likh kar please​

Answer 1

Answer:

${10x}^{2} + 20x + 30$

Explanation:

Answer of no. 4

Formula of perimeter of rectangle is = 2(l+b)

So ATQ,

$2( {5x}^{2} +3x + 6) + (7x + 9) \\ 2( {5x}^{2} + 3x + 6 + 7x + 9) \\ 2( {5x}^{2} + 10x + 15) \\ answer - {10 }^{2} + 20x + 30$