Question

please answer me correctly friends ​

Answer 1

Answer:

3) (||) 3terms

4) (|) 24816

5) (||) a¹⁵

Step-by-step explanation:

3) (2x - 5y)² = (2x)² + (5y)² - (2)(2x)(5y)

= 4x² + 25y² - 20xy

so, 3terms

4) 179² - 85²

by using a² + b² = (a+b)(a-b)

179² - 85² = (179+85)(179-85)

= (264)(94)

= 24816

5) a²⁷ ÷ a¹²

by reciprocating a¹²

a²⁷ × a^-12 = a^(27-12) = a¹⁵

Answer 2

Step-by-step explanation:

3. There are 2 terms in the expression

explained:- (2x-5y)²

(2x)² it is first term

(5y)² it is the second term

4. The value of 179² - 85² is 24,816

explained :- 179² =32,041

85²= 7,225

32,041 -7,225

=24,816

5. a with power 27 ÷ a with power 12 is equal to a with power 15

explained :- by applying laws of exponent

formula

${a}^{m} \div {a}^{n} = {a}^{m} - {a}^{n}$

so

${a}^{27} - {a}^{12} = {a}^{15}$