1.

Find the product of 1/2(4q²+5r²)*(4q²-5r²) and also find its value forp=1,q=-1,r=2​

Answer»

ANSWER:

given q=-1,r=2

1/2(4*1+5*4)(4*1-5*4)

1/2(24)(-20)

-10*24

-240



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