√12 X √15 is equal to 0 points √25 6√5 10√5 5√6 ​

Question

√12 X √15 is equal to

0 points

√25

6√5

10√5

5√6

in progress 0
Alexandra 2 months 2021-08-11T11:27:27+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-11T11:28:36+00:00

    Answer:

    6 \sqrt{5}

    Step-by-step explanation:

     \sqrt{12}  \times  \sqrt{15}  =  \sqrt{12 \times 15}  \\  =  \sqrt{4 \times 3 \times 3 \times 5 }  \\  =  \sqrt{2 \times 2 \times 3 \times 3 \times 5}   \\ = 2 \times 3 \times  \sqrt{5}  \\  = 6 \sqrt{5}

    0
    2021-08-11T11:28:41+00:00

    Answer:

    6√5

    Step-by-step explanation:

    √a × √b = √ab

    √12 X √15 = √12 × 15

    = √180

    By prime factorisation of 180, we get

    180 = 2 × 2 × 5 × 3 × 3

    = 2² • 5 • 3²

    So, √180 = √2² • 5 • 3²

    = 2 × 3 √ 5 = 6√5

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )