Question

(vii) a? -- b2 = (a) (a + b) (b) (a - b) - (c) (a + b)(a - b) (d) (a + b)2 + (a - b)​

Answer 1

Answer:

(a−b)x+(a+b)y=a

2

−2ab−b

2

----- (i)

(a+b)(x+y)=a

2

+b

2

-------- (ii)

Subtracting eq (i) by eq (ii), we get.

⇒(a−b)x−(a+b)x=a

2

−2ab−b

2

−a

2

−b

2

⇒−2bx=−2bx(a+b)

⇒x=(a+b)

∴(a+b)(a+b+y)=a

2

+b

2

⇒(a+b)

2

+(a+b)y=a

2

+b

2

⇒y=

a+b

−2ab

Ans.

Step-by-step explanation:

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Answer 2

Answer:

The answer is option c

Step-by-step explanation:

a^2-b^2

=(a+b)(a-b)