Question

Determine o calor de x nas igualdades.
a)
$\sqrt{34} \times \sqrt{8} = 4 \sqrt{x}$
b)
$\sqrt{x} \times \sqrt{40} = 8 \sqrt{10}$
c)
$\sqrt{4} \div \sqrt{2} = 4 \sqrt{2}$
d)
$\sqrt{550} \div \sqrt{1} = x \sqrt{2}$

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Answer 1

a)

(√34 . √8)^2 = (4√x)^2

34.8 = 16x

34 .8 / 16 = x

x = 17

b) (√x . √40)^2 = (8√10)^2

   x . 40 = 64.10

   x= 64.10/40

   x = 16

c)  Essa equação ta sem o x

d) (√550 / √1 )^2 =  (x√2)^2

   550/1 = x^2.2

   550/ 2 = x ^2

    275 = x^2

x = √275

x = 5√11