Question

solve all of them quickly ​

Answer 1

Question 1)

$2x(3 - 7xy) \\ = 6x - 14 {x}^{2} y$

Question 2)

$2.35 \times {10}^{8}$

Question 3)

Let number be x .

So the equation is ,

2x + 4 = 12

Question 4)

$5x = 15 \times 3 \\ x = (15 \times 3) \div 5 \\ = 3 \times 3 = 9$

Question 5)

$1micron \: = 1 \times {10}^{ - 6}$

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