If a + b = -2 and a - b = 12, find b. 

Find the exact value of the following question:

$$ 1280÷{2^3} + 1220÷{2^2}-182=?$$

The factors of  $$ x^2-2x-15 $$ are: 

The value of 64 ÷ 2 ×(9÷3) ×3÷9-32 is:

Solve: 0.05 × 0.4 

Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations and Give answer

Give answer (A) If x > y
Give answer (B) if x ≥ y
Give answer (C) if x<y
Give answer (D) If x ≤ y
Give answer (E) if x=y or the relationship cannot be established.

I. 2x²+11x+12=0
II. 5y²+27y+10=0

Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations and Give answer

Give answer (A) If x > y
Give answer (B) if x ≥ y
Give answer (C) if x<y
Give answer (D) If x ≤ y
Give answer (E) if x=y or the relationship cannot be established.

I. x² – 1 =0
II. y²+4y+3=0

If one root of the equation Ax²+Bx+C = 0 is two and a half times the others, then which of the following is TRUE?