Math, asked by manyam143, 10 months ago

Using the identity :(a-b) ²=a²-2ab+b²

a) (5x-4y) ²
please help me ​

Answers

Answered by hrithick934415
2

Answer:

Step-by-step explanation:

We know, (a + b)² = a² + b² + 2ab

Applying formula,

(5x)² + (4y)² + 2 { 5x × 4y}

25x² + 16y² + 40xy

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