Question

If (64)2 - (36)2 = 20 x X , then x = ?
a)70
b)120
c)180
d)140​

Answer 1

Answer:

140

Step-by-step explanation:

So for this type of question it is very easy.So

(64)(64)=4096 and 36multiplied by 36is equal to 1296.

So you minus it and the answer is 2800.

So the answer divide it by 20.

And the answer is D.140  ..

Answer 2

Answer:

x=

$\frac{14}{5}$

In decimal = 2•8

Step-by-step explanation:

64 × 2 - 36 ×2 = 20 × X

128-72=20X

56=20X (swap the sides of the equations)

20X=56 (divide both sides with 4)

5X=14

X=

$\frac{14}{5}$=2•8

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