Question

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Plz help me

......

Q 1: Using suitable identities , evaluate the following:
i. (0.5x+0.9y)(0.5x-0.9y)

Answer 1

Answer:

(0.5x+0.9y)(0.5x-0.9y)

=

${0.5x}^{2} - {0.9y}^{2}$

Answer 2

Answer:

0.25 x sq. -0.81 y sq.

Step-by-step explanation:

identity used here is identity 3

( a+ b)( a- b)=a sq.- b sq.

(0.5 x)^2 - (0.9 y)^2=0.25 x sq. -0.81 y sq.

hope u got your answer

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