Question

1.What should be added to a2 + ab + b2 to obtain 4ab + b2?

Answer 1

Answer:

according to Question if x is added to a²+b²+2ab then it will give 4ab+b².

let x must be subtracted

let x must be subtracted⟹a 2+b 2

let x must be subtracted⟹a 2+b 2 +2ab−x=−4ab+2b 2

let x must be subtracted⟹a 2+b 2 +2ab−x=−4ab+2b 2 ⟹x=a 2 +b 2 +2ab−(−4ab+2b 2 )

let x must be subtracted⟹a 2+b 2 +2ab−x=−4ab+2b 2 ⟹x=a 2 +b 2 +2ab−(−4ab+2b 2 )It can be written as

let x must be subtracted⟹a 2+b 2 +2ab−x=−4ab+2b 2 ⟹x=a 2 +b 2 +2ab−(−4ab+2b 2 )It can be written asx=a 2 +b 2 +2ab+4ab−2b 2

let x must be subtracted⟹a 2+b 2 +2ab−x=−4ab+2b 2 ⟹x=a 2 +b 2 +2ab−(−4ab+2b 2 )It can be written asx=a 2 +b 2 +2ab+4ab−2b 2 ⟹x=a 2 +(b 2−2b 2 )+(2ab+4ab) (combining like terms)

let x must be subtracted⟹a 2+b 2 +2ab−x=−4ab+2b 2 ⟹x=a 2 +b 2 +2ab−(−4ab+2b 2 )It can be written asx=a 2 +b 2 +2ab+4ab−2b 2 ⟹x=a 2 +(b 2−2b 2 )+(2ab+4ab) (combining like terms)⟹x=a 2 −b 2 +6ab

let x must be subtracted⟹a 2+b 2 +2ab−x=−4ab+2b 2 ⟹x=a 2 +b 2 +2ab−(−4ab+2b 2 )It can be written asx=a 2 +b 2 +2ab+4ab−2b 2 ⟹x=a 2 +(b 2−2b 2 )+(2ab+4ab) (combining like terms)⟹x=a 2 −b 2 +6ab∴a 2 −b 2+6ab must be subtracted

Answer 2

Answer:

3ab-a²

Step-by-step explanation:

let the number be=x

$x = 4ab + {b}^{2} - {a}^{2} - {b}^{2} - ab \\ = 3ab - {a}^{2}$

MARK ME AS BRAINLIEST