Question

(-7+4√7-3√7)is.(a)a positive rational number(b)an irrational number(c)a negative rational number(d)equal to zero

Answer 1

Answer:

HEY MATE

(-7 + 4√7 - 3√7)

(-7 + 1√7 )

ITS A IRRATIONAL NO..I GUESS

FOLLOW ME IF U WISH

Answer 2

(-7+4√7-3√7) is (b)an irrational number .

Given:

A number (-7+4√7-3√7)

To Find:

The type of number the given number is.

Solution:

• Irrational numbers are those numbers that cannot be represented in the form of a fraction (P/Q).
• The real numbers that are not rational numbers are known as irrational numbers.

Eg: √2 is an irrational number

• When an irrational and a rational number are added, the result or their sum will be an irrational number only.

Example:

The irrational number x, & a rational number y are added. Their result, x+y is the irrational number.

In the given number,

-7+4√7-3√7

=> -7 + $\sqrt{7}$

x = $\sqrt{7}$ and y = -7

x+y is an irrational number

Hence, it is an irrational number.

#SPJ3