Expand and Simplify (2 + √5 )(1 – √5 )
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Step-by-step explanation:
(2 + √5 )(1 – √5 )
2(1-√5)+√5(1-√5)
2-2√5+√5-(√5)^2
2-√5-5= -3-√5
Answered by
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Answer:
7 + 3√5
Step-by-step explanation:
(2 + √5 )(1 +√5 ) = 2 * 1 + 2 * √5 + √5 * 1 + √5 * √5 = 2 + 2√5 + √5 + 5 = 7 + 3√5
So, the simplified form of the expression is: 7 + 3√5
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