Question

pls find the answer

answer each question for 2 marks​

Answer 1

..QUESTION..

II ) Answer the following question :

ㅤㅤ1 ) Multiply ( 3x²+5y²) by ( 5x²-3y²)

ㅤㅤ2 ) Using suitable identities find :

• 48²

ㅤㅤ3 ) Simplify :

• 2x² (x + 2) - 3x (x² - 3) - 5x (x + 5)

ㅤㅤ4 ) Using Identities , evaluate .

• 48 × 52

ㅤㅤ5 ) Find the value of x if

• 8x = 35² - 27²

..ANSWER..

ㅤㅤ1 ) Answer........

ㅤㅤ➪ ( 3x² + 5y² ) × ( 5x² - 3y² )

ㅤㅤ➪ 3x² (5x²-3y²) + 5y² (5x²-3y²)

ㅤㅤ➪ 15x⁴ - 6x²y² + 5x²y² - 15y⁴

ㅤㅤ➪ 15x⁴ - 1x²y² - 15y⁴ ----------- Ans..

ㅤㅤ2 ) Answer........

ㅤㅤ➪ 48²

ㅤㅤ➪ ( 40 + 8 )²

ㅤㅤ➪ (40)² + 2(40)(8) + (8)²

ㅤㅤ➪ 1600 + 640 + 64

ㅤㅤ➪ 2240 + 64

ㅤㅤ➪ 2304 ㅤㅤㅤㅤㅤ------------ Ans..

ㅤㅤ3 ) Answer........

➪ 2x² ( x + 2 ) - 3x ( x² - 3 ) - 5x ( x + 5 )

➪ 2x³ + 4x² - 3x³ + 9x - 5x² - 25x

➪ 2x³ - 3x³ + 4x² - 5x² + 9x - 25x

➪ - 1x³ - 1x² + 16x ㅤㅤ ------------- Ans..

ㅤㅤ4 ) Answer........

☯︎ Identity applicable » ( a + b ) ( a - b ) = a² - b²

ㅤㅤ➪ 48 × 52

ㅤㅤ➪ ( 50 - 2 ) ( 50 + 2 )

ㅤㅤ➪ ( 50 + 2 ) ( 50 - 2 )ㅤㅤ*

ㅤㅤ➪ 50 (50-2) + 2 (50-2)ㅤ*

ㅤㅤ➪ 2500 - 100 + 100 - 4 *

ㅤㅤ➪ 2500 - 4ㅤㅤㅤㅤㅤㅤ *

ㅤㅤ➪ 2496ㅤㅤㅤㅤㅤㅤㅤㅤ*

or , directly

ㅤㅤ➪ ( 50 + 2 ) ( 50 - 2 )

ㅤㅤ➪ ( 50 )² - ( 2 )²

ㅤㅤ➪ 2500 - 4

ㅤㅤ➪ 2496ㅤㅤㅤㅤㅤㅤ---------- Ans..

ㅤㅤ5 ) Answer........

ㅤㅤ➪ 8x = 35² - 27²

ㅤㅤ➪ 8x = 1225 - 729

ㅤㅤ➪ 8x = 496

ㅤㅤ➪ x = 496 / 8

ㅤㅤ➪ x = 62

ㅤㅤㅤ•°• x = 62 ㅤㅤㅤㅤ--------- Ans..

ㅤㅤㅤ꧁ ʙʀᴀɪɴʟʏ×ᴋɪᴋɪ ꧂

ㅤㅤㅤ

Answer 2

Answer:

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refer to the attachment please :)

and better to solve your paper by your own :D