Answer:
Step-by-step explanation:
Let's apply the formula (x+y)² = x² + 2xy + y²
Here, x = -a and y = b
So,
= (-a)² + 2(-a)(b) + (b)²
= a² - 2ab + b²
Hence, it has been proved that (-a + b)² = a² - 2ab + b².
Hope this helped!
<h3>~AH1807</h3>
What is an expression?
1 answer:
Depends on what kind of expression you are talking about, A mathematical expression, or a normal expression.
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<u>Mathematical</u>
When you combine numbers and variables using operations such as addition, subtraction, multiplication, division, exponentiation, and other operations.
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<u>Normal</u>
A look on someone's face or a word or phase.
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<em>I hope that i helped!</em>
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<em>May i have brainliest?</em>
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