simlplify the expression (√5-√2)(√5+√2)
Answers
Answered by
0
Answer:
We know that (a+b)(a−b)=a
2
−b
2
=(
5
+
2
)(
5
−
2
)
=(
5
)
2
−(
2
)
2
=5−2
=3
Step-by-step explanation:
We know that (a+b)(a−b)=a
2
−b
2
=(
5
+
2
)(
5
−
2
)
=(
5
)
2
−(
2
)
2
=5−2
=3
Answered by
2
Answer:
3
Step-by-step explanation:
(√5 + √2)(√5 - √2)
use identity (a² - b²) = (a+b)(a-b)
= (√5)² - (√2)²
= 5 - 2
= 3
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