simplify the following
(5-√5)^2
Answers
Answered by
2
Answer:
♣ (a – b)² = a² – 2ab + b²
(5-√5)²
= 5² - 2×5×√5 + (√5)²
= 25 - 10× √5 + 5
= 25+5- 10√5
= 30- 10√5
Answered by
0
Answer:
(
5
+
2
)(
5
−
2
)
We know that (a+b)(a−b)=a
2
−b
2
=(
5
+
2
)(
5
−
2
)
=(
5
)
2
−(
2
)
2
=5−2
=3
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