ALGEBRA - Practice Mode

1) Which is expanded form of a³- b³?

(a+b) (a2 - b2- ab) (a-b) (a2 + b2 + ab) (a-b) (a2 - b2 - ab) (a-b) (a2 - b2+ ab)

Correct Answer: (a-b) (a2 + b2 + ab)

2) What is the value of (6³) / ((-3)³) ?

8 (-8) 27 (-27)

Correct Answer: (-8)

3) What is the value of x²-y² if (x+y) = 9, (x - y) = 4?

13 65 36 46

Correct Answer: 36

4) What is the value of 'X' if x - y = 6 and x + y = 8?

5 6 7 14

Correct Answer: 7

5) What is the value of a²+b² if a+b=9 and ab = 20?

121 (-121) 41 (-41)

Correct Answer: 41

Explanation:

Inert gas (usually Argon) is inactive or deficient in active chemical properties. The shielding gas serves to blanket the weld and exclude the active properties in the surrounding air.

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ALGEBRA - Practice Mode

1) Which is expanded form of a3- b3?

2) What is the value of (63) / ((-3)3) ?

3) What is the value of x2-y2 if (x+y) = 9, (x - y) = 4?