Question

What is to be added with a2 -ab+2b2 to get a2+b2?​

Answer 1

Step-by-step explanation:

a²-ab+2b²+(ab-b²)= a²-b²..

Answer 2

QUESTION:

What is to be added with a² -ab+2b² to get a²+b²?​

SOLUTION:

let x be the unknown number.

The equation would be:

(a² - ab + 2b²) + x = a²+b²

Solve for x:

(a² - ab + 2b²) + x = a²+b²

• a² - ab + 2b² + x = a²+b²
• x = a² + ab + 2b² + a² + b²
• x = 0 + ab - 2b² + b²
• x = 0 + ab - b²
• x = ab - b²
• x = -b² + ab

ANSWER:

• -b² + ab

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