Question

a=3 b=-1 find a² - 2ab + b²​

Answer 1

GIVEN:-

• a = 3
• b = -1

TO FIND :-

• Value of a²-2ab + b²

SOLUTION:-

Just putting down values of a , b

a² - 2ab + b²

a= 3 ; b = -1

》 (3)² -2 (3)(-1) + (-1)²

》 9 + 6 + 1

》 16

KNOW MORE :-

• Square of positive number with power even or odd is always positive
• Square of a negative number with even power is always positive
• Square of negative number with odd power is always negative

EXAMPLES :-

• (-3)² = positive
• (-23)³ = negative
• (-10000)9 = negative
• (199)² = positive
• (-100)² = positive

MULTIPLICATION OF SIGNS:-

(+) ( -) = -

(-) ( +) = -

( + ) ( + ) = +

(-) (-) = +

Answer 2

Answer:

16

Step-by-step explanation:

• a=3

• b=-1

$a ^{2} { - 2ab} + b ^{2}$

• 3^2 - 2×3×-1+(-1)^2

• 9-(-6)+1

• 9+6+1

• 16

Hope this is helpful and useful