Question

what to do please explain nos1 as follows​

Answer 1

Answer:

verification method means substituting given number

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Answer 2

Here is your answer,

Root-it is a value which satisfies an equation.

here you have to substitute the given roots of equation to show that it is the toot of given equation.

Your solution is as follows-

1.sol. putting x=4 in the given equation

3x-5=7

3(4)-5=12-5=7

since it satisfies the eqn so it is

the root of equation.

You can do other in the same way.

Hope it helps you.