Question

simplify ( 5_ 2 √6 ) (5+2√6)
A rational number equivalent to 8/7 is ________​

Answer 1

Answer:

Step-by-step explanation:

( 5-2 √6 ) (5+2√6)

=5²-(2√6)²

=25-2²*6

=25-24

=1

Answer 2

Correct Question :

›»› Simplify (5 - 2√6) (5 + 2√6)

Answer :

›»› The value is 1.

Given :

• (5 - 2√6) (5 + 2√6)

To Find :

• Simplify the value.

Solution :

→ (5 - 2√6) (5 + 2√6)

Expand the expression using (a - b) (a + b) = a² - b²,

→ 5² - (2√6)²

Calculate power,

→ 25 - (2√6)²

Solve the power,

→ 25 - (2²(√6)²)

Calculate power,

→ 25 - (4(√6)²)

If we square the redical sign, it will disappear,

→ 25 - (4 * 6)

Multiply 4 and 6,

→ 25 - 24

Subtract 25 from 24,

→ 1

║Hence, the value is 1.║