Question
Equation 1: x² + 16x + 63 = 0 Equation 2: y² +
10y + 21 = 0Solution
For Equation 1: (x + 7)(x + 9) = 0, x = -7 or x = -9. For Equation 2: (y + 7)(y + 3) = 0, y = -7 or y = -3. Comparison: x ≤ y. Answer: D) x ≤ y
Simplify the following expression:Â (8x - 6y - 5z)Â 2
When positive numbers x, y and z are divided by 31, the remainders are 17, 24 and 27, respectively. When (4x - 2y + 3z) is divided by 31, the remainder ...
Which of the following statements is correct?
I. If x = 12, y = –2 and z = –10, then x³ + y³
+ z³ = 720
II. If x + y = 48 an...
If (x + y) = 35, then find the value of (x - 10)6 + (y - 25)6.
Find the common factor of (x2Â - 4x - 12) and (x2Â - 14x - 32).
Find the largest 5-digit number that is divisible by 12, 15, 18, and 24. Also, what is the remainder when this number is divided by 11?
The sum of two numbers is 45 and their difference is 9. What is the larger number?
x + y = 4, xy = 2, y + z = 5, yz = 3, z + x = 6 and xz =4, then find the value of x 3  + y 3  + z 3  – 3xyz.
...What is the value of (a² + b²+4c²- ab-2bc-2ca) (a + b+2c):
If (a + b) = 13 and ab = 18, find the value of (a² + b²).
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