CTET 2 Math and Science 23 Dec 2021 Paper

Question : 43 of 151

Marks: +1, -0

x=-3, y=2

and

z=5

, then what is the value of the expression

(2 x^3 y-3 x y^2-x z^2+x^2 z y)

Solution:

(2 x^3 y-3 x y^2-x z^2+x^2 z y)

⇒\{2 ×(-3)^3 × 2\}-\{3 ×(2) ×(5)^2\}-\{(-3) ×(5)^2\}+\{(-3)^2 ×(5) ×(2)\}

⇒\{-108\}-\{150\}-\{-75\}+\{90\}

⇒\{-108\}-\{150\}+\{75\}+\{90\}

⇒-93

∴ (2 x^3 y-3 x y^2-x z^2+x^2 z y)=93

The correct option is 1 i.e. 93

Go to Question:

Prev Question

Next Question