Question

Find the product of (y + 2/5 y2) and (5y - y2). Also, verify the result for y=3​

Answer 1

Answer:

APPROPRIATE QUESTION:

Find the product

where,

(y + 25y2) and (5y - y²)

Also verify the result for y = 3

CLARIFICATION :

First let's find the product

(y + 25y2) x (5y - y²)

5y(y + 25y2) - y²(y + 25y²)

5y² + 125y³y³ – 25y4

5y² +124y³ 25y¹

Where y = 3 ,

⇒ 5(3)² +124(3)³ – 25(3)4

=> 5 x 9 + 124 x 27 25 x 81

=> 45 + 3348 - 2025

=> 3393 - 2025

=> 1368

Now let's put the value y = 3 in the given question for verification

(y + 25y2) × (5y - y²)

⇒5y(y + 25y2) - y²(y + 25y²)

=>5(3) (3 + 25 (3)²) — 3²(3 + 25(3)²)

=>15(3 + 25 x 9) - 9(3 + 25 x 9)

⇒15 (3+225) - 9(3 +225)

⇒15 (228) 9(228)

=> 3420 2052

=>1368