Question

विस्तरण किजिए :
$(2x + 7) {?}^{2}$
​

Answer 1

Answer:

4x² + 49 + 28x

Step-by-step explanation:

(2x + 7)²

Use: (a + b)² = a² + b² + 2ab

(2x)² + (7)² + 2(2x)(7)

4x² + 49 + 28x