Aptitude - Simplification - Discussion

Discussion Forum : Simplification - General Questions (Q.No. 4)

Simplification

If a - b = 3 and a² + b² = 29, find the value of ab.

Answer: Option

Explanation:

2ab = (a² + b²) - (a - b)²

= 29 - 9 = 20

ab = 10.

Discussion:

107 comments Page 9 of 11.

Govind said: 8 years ago

If a+b+c=0 then {(a^2 + b^2 + c^2)^2} / {(a^2 * b^2) + (b^2 * c^2) + (c^2 * a^2)}.

Rishabh said: 8 years ago

3^a, 5^-b, 15^c find 1/a-1/b-1/c. Please solve this.

Harshit shrivastava said: 8 years ago

Please solve my question.

If a + b = -5 find the value of a^3+b^3+125.

Raman deep said: 8 years ago

If (2-a+b, b)=(6, 2), then find the value of a and b. Can anyone solve this?

Farman said: 8 years ago

Let's look it if a2+b2=25 and a-b=3 ab=?

25-(3)^2=16 then 16/2 =8.

Sanjay rajput said: 8 years ago

a+b/a+b-a+3b/a+b+a+5b/a+b to 15th term sum of numbers.

Adwait Phadke said: 8 years ago

@Deepa.

a/b=2/3
so 3a=2b
Substituting 3a=2b in eqn
3a+5b/3a-5b
=2b+5b/2b-5b
=7b/-3b.
=-7/3.

Samuel said: 8 years ago

If a=? and b=4. Find the value of 3a+b.

Can anyone solve this?

Abhijeet said: 8 years ago

It'snot an equation.

We take the equation:
3a+b
3a+4= ?

Akash said: 8 years ago

Would anyone, please solve it.

X/y+y/x=8,then x^4/y^4+y^4/X^4=?

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