Question

If. a+b=25 ,A2+b2=225find. ab
​

Answer 1

(a+b)²=a²+2ab+b²=25²

2ab=625-225

ab=400÷2

ab=200

pls mark me as brainliest

Answer 2

The answer for the following question or the problem is given below.

• So therefore the value of ab is 200.

Step-by-step explanation:

Given:

a + b = 25

a² + b² = 225

To calculate:

ab

We know;

The formula is;

(a + b)² = a² + b² + 2×ab

From the above given examples;

By substituting the values;

(25)² = 225 + 2 × ab

The square root of 25 is 625.

So;

625 = 225 + 2× ab

625 - 225 = 2× ab

400 = 2× ab

Finally;

ab = $\frac{400}{2}$

ab = 200

So therefore the value of ab is 200.

For reference links:

https://brainly.in/question/1709889

https://brainly.in/question/8428998