Simplify each of the following expression. (Root7+root5)(root5-root7)
Answers
Answered by
0
Answer:
-2
Step-by-step explanation:
(✓7+✓5)(✓5-✓7)
=✓7(✓5-✓7)+✓5(✓5-√7)
=✓35-7+5-✓35
= -2
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Answered by
0
Easiest way
(Rt 7+rt5)(rt5-rt7)
-1(rt7+rt5)(rt7-rt5). (A+b)(a-b) =a^2-b^2
-1(7-5)
-1(2)
-2
(Rt 7+rt5)(rt5-rt7)
-1(rt7+rt5)(rt7-rt5). (A+b)(a-b) =a^2-b^2
-1(7-5)
-1(2)
-2
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