On simplifying (√3 − √7) square
d) √5
a)2 − √21 b) 5 − √21 c) 2(5√21) d)10-
2√21
Answers
Answered by
0
Answer:
your answer is (d) 10-√21.
Answered by
0
Answer:
Step-by-step explanation:
(a-b)² = a² -2ab +b²
(√3-√7)² = (√3)² + (√7)²-2×√3×√7
= 3 + 7 - 2√21
=10 -2√21
= 2×(5-√21)
Similar questions