Multiplicative Identity

Q.

Find the value of a and b if (5-√6)/(5+√6)=a-b√6

Q.

4+ 3 root5I4 - 3 root5= a+b root5

Q.

3+√7/3-√7=a+b√7

Q.

The multiplicative identity for integers is?

1. 0

2. -1

3. 1

4. None of these

Q.

Find the values of a and b if 7+3√5/3+√5 - 7-3√5/3-√5 = a+b√5

Q.

12 raised to power 1/4 multiply 6 raised to power 1/7 solve and simplify it

Q.

If a = 6+2√3 , find the value of a - 1/a

Q.

One ($1$) is -

1. the identity for addition of rational numbers

2. the identity for subtraction of rational numbers.

3. the identity for multiplication of rational numbers.

4. the identity for division of rational numbers.

Q.

(81/16)–¾ * [(9/25)³/² ÷ (5/2)–³]

Q. If x=(4-√15), find the value of [x+1/x].

Q. How many zeros are there at the end of product of first thousand natural numbers

Q. 75 × 75 + 2 × 75 × 25 + 25 × 25 is equal to

(a) 10000

(b) 6250

(c) 7500

(d) 3750

Q. 16/25 can also be written as: ​

1. 0.32
2. 0.48
3. 0.64
4. 0.72

Q.

Simplify √32 +√48 ÷√8+√12.can we solve this by taking 32raised to 1/2+48 raised to 1/2 ?can we??

Q. 22 by 7 into 50 how to solve the sum the asnwer was 157.4

Q. The value of ${\left\{{\left(23+2^2\right)}^{2/3}+(140-19{)}^{1/2}\right\}}^2,$ is

(a) 196

(b) 289

(c) 324

(d) 400

Q.

Given a = 6 + √3
⇒ (1/a) = 1 / (6 + √3)
Multiply and divide by (6 − √3)
⇒ (1/a) = (6− √3) / [(6 + √3)(6 − √3)]
⇒ (1/a) = (6 − √3) / [36 − 3]
⇒ (1/a) = (6− √3)/33
∴ a - (1/a) = (6 + √3) -(6 − √3)/33
= [33(6 + √3) - (6 - √3)]/33
= [32*6 + 34*√3]/33
= [192 + 34√3]/33

Answer : [192 + 34√3]/33

Why does 1/a come above

Q.

Pls tell the ans of root 32 plus root 48 upon root 8 plus root 12

Q. Find the value of a and b if 5+2√3/7+4√3 = a+b√3

Q. $$\begin{gathered} Solvethis: \\ \frac{1}{\sqrt{3}+\sqrt{2}}-\frac{2}{\sqrt{5}-\sqrt{3}}-\frac{3}{\sqrt{2}-\sqrt{5}} \end{gathered}$$

Q.

SIMPLIFY THE FOLLOWING EXPRESSION

[4√5 -3√2] [3√5 + 5√2]

Q. Q.1. Find the value of a and b
$\frac{\sqrt{3}-1}{\sqrt{3}+1}=a+b\sqrt{3}$

Q.

Question 127

Fill in the blank to make the statement true.

2916 x .............. = 0

Q. How many zeros are there at the end of product of first thousand natural numbers

Q. Simplify. Root 7 + root 8 = ?

Q.

The multiplicative identity of an integer is $\left(\_\_\_\right)$

Q.

125^1/2 + 125^1/2 - 845^1/2

Q.

find the value of a and B if 5+2 √3 / 7+4√3 = A+B√3

Q. Assertion :The product of 10 consecutive natural numbers is divisible by 9!. Reason: The product of n consecutive positive integers is divisible by (n + 1)!

1. Both (A) & (R) are individually true & (R) is correct explanation of (A),
2. Both (A) & (R) are individually true but (R) is not the correct (proper) explanation of (A).
3. (A)is true but (R) is false,
4. (A)is false but (R) is true.

Q.

Question 68

In the following question, state whether the given statement is true (T) or false (F).
1 is the identity for multiplication of whole numbers.