📝 Algebraic Expressions ( Questions)
Q. Find each of the following products
a) `-4/7xyz (9/2 x^2yz - 3/4xyz^2)`
b) `1.5a (10a^2b - 100ab^2)`
c) `10a^2( 0.1a - 0.5b)`
Q. Find the product `-3y(xy + y^2)` and find its value for `x = 4` and `y = 5`
Q. Find the values of the following polynomials at `a = – 2` and `b = 3`:
(a) `a^2 + 2ab + b^2`
(b) `a^2 – 2ab + b^2`
(c) `a^3 + 3a^2b + 3ab^2 + b^3`
(d) `a^3 – 3a^2b + 3ab^2 – b^3`
(e) `\frac {a^2 + b^2}{3}`
(f) `\frac {a^ 2 - b^2}{3}`
(g) `a /b
+
b/ a`
(h) `a^2 + b^2 – ab – b^2 – a^2`
Simplify
(1) `a^2b (a- b^2) + ab^2 (4ab - 2a^2) - a^3b (1- 2b)`
(2) `4st ( s- t) -6s^2 (t- t^2) - 3t^2 (2s^2 - s) + 2st (s - t)`
(3) `3x^2 + 2(x+ 2) -3x(2x+1)`
(4) `x( x+ 4) + 3x(2x^2 -1) + 4x^2 + 4`
Comments
Post a Comment