Question

(y + 5) (y - 3) =
my exam pls answer!.​

Answer 1

Answer:

y²-3y+5y-15

y²+2y-15

Step-by-step explanation:

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Answer 2

Answer:

Given,

(y+5)(y-3) = ?

• (x+a)(x-b) = x²+(a-b)x-ab.

=> Let's, x=y, a=5, b=3

=> y²+(5-3)y-5×3

=> y²+2y-15.

For factorisation....

• 15y² = 5y × (-3y)

=> y²+5y-3y-15

=> y(y+5)-3(y+5)

=> (y-3) (y+5).

=> y = 3 or y = -5..

Step-by-step explanation:

Hope it helps you....