Math, asked by spd8762948377, 1 year ago

What is 4 root 5 × 4 root 5
Plz fast

Answers

Answered by shadow1924
2

4 \sqrt{5}   \times 4 \sqrt{5}
 =  {(4 \sqrt{5}) }^{2}
 = 80

spd8762948377: Explain
shadow1924: uhm...the steps are there
sknayak: according to formula a√b*a√b=(a√b)^2
spd8762948377: Thanks
sknayak: so when we multiply... its (4√5)^2=16*5=80
Answered by sknayak
2
4√5*4√5=80.......4*4=16 and √5*√5=5. so when we multiply 16*5=80....hope it's useful!!

M2J: 80 is the answer
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