A) (i) is true but (ii) is false.
B) (ii) is true but (i) is false.
C) Both (i) and (ii) are true.
D) Neither (i) nor (ii) is true.
Correct Answer: C
Solution :
(i) Difference\[=3ab-2{{a}^{2}}-2{{b}^{2}}-(5{{a}^{2}}-7ab+5{{b}^{2}})\] \[=(3ab+7ab-2{{a}^{2}}-5{{a}^{2}}-2{{b}^{2}}-5{{b}^{2}})\] \[=10ab-7{{a}^{2}}-7{{b}^{2}}\] \[10ab-7{{a}^{2}}-7{{b}^{2}}\] has three terms, so it is a trinomial. (ii) Sum of \[{{x}^{2}}+xy+{{y}^{2}}\] and \[2{{x}^{2}}+3xy\] is \[{{x}^{2}}+xy+{{y}^{2}}+2{{x}^{2}}+3xy\] \[=3{{x}^{2}}+4xy+{{y}^{2}}\].You need to login to perform this action.
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