Question

Q4.Using identities find the value of (y - 3) (y + 5)​

Answer 1

Answer:

(y+3) (y+5)

By using 4th identity

Step-by-step explanation:

(y+3) (y+5)

By using 4th identity

(x+a)(x+b)

x^2+(a+b)x+ab

(y)^2+(3+5)y + 15

y^2+8y+15

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Answer 2

Answer:

y^2+2x-15

Step-by-step explanation:

BY USING THE IDENTITY (X+A) (X+B) = X^2 +(A+B)x+(AB)

STEP 1 - let y be the x so ,

Y^2 + (5+(-3))x +5*(-3)

STEP 2 - Y^2 (5-3)x -15

STEP 3 - y^2 +2x -15