Question

sove all the questions with process and correct​

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

ANS 1 )

5 + x - 2x² + 0x³

-( 4 - 6x + 0x²+ 4x³)

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STEP 2

5 + x - 2x² + 0x³

+(  - 4 + 6x - 0x²- 4x³)

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1 + 7x - 2x² - 4x³

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ANS 2)

Identity => (A+B)² = A² + B² + 2AB

 = (8X)² +( 9Y)² + 2*8X*9Y

= (8X + 9Y)²

Now input Values

= (8{10} + 9{4/9})²

= (80 + 4)²

=84²

= 7056

ANS 3)

303 = 300 + 3

297 = 300 - 3

300 = A

3 = B

IDENTITY =( A + B) * (A- B)

= A² - B²

= 300^2 - 3^2

= 90000 - 9

= 89991

ANS 4 )

 1290 = 2*5*3*43

AS WE CANT SORT THEM INTO PAIRS OF TRIPLETS , THEREFORE 1290 IS NOT A PERFECT CUBE.

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