Advertisements
Advertisements
Question
If P = − 12x2 – 10xy + 5y2, Q = 7x2 + 6xy + 2y2, and R = 5x2 + 2xy + 4y2 ; find P – Q
Solution
P = − 12x2 – 10xy + 5y2
Q = 7x2 + 6xy + 2y2
R = 5x2 + 2xy + 4y2
P − Q = (− 12x2 − 10xy + 5y2) − (7x2 + 6xy + 2y2)
= − 12x2 − 10xy + 5y2 − 7x2 − 6xy − 2y2
= − 12x2 − 7x2 − 10xy − 6xy + 5y2 − 2y2
= − 19x2 − 16xy + 3y2
APPEARS IN
RELATED QUESTIONS
Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.
y − x = ...........
Find the value of `"yx"/"z"`, when x = 8, y = 4 and z = 16
If a = 3, b = 0, c = 2 and d = 1, find the value of ab − bc + cd − da
If a = 3, b = 0, c = 2 and d = 1, find the value of 2a2 − 3b2 + 4c2 − 5d2
If m = 2, find the difference between the values of 4m3 and 3m4.
Evaluate:
(3y + 8y) – 5y
Simplify:
10m + (4n − 3n) − 5n
Simplify:
a − (a − b − c)
Simplify:
p + 2 (q − r − p)
If x = a2 – bc, y = b2 – ca, and z = c2 – ab; find the value of ay – bx + cz
