c1mcjonstbug c1mcjonstbug

29-09-2016
Mathematics

Answered

Simplify.

(2a – 5)2

A.

42a – 7 + 16

B.

4a2 – 25

C.

4a2– 20a + 10

D.

4a2 – 20a + 25

Verified Answer :

29-09-2016

D)4a2-20a+25{(a-b)2=a2+b2-2ab)}

Answer Link

Hussain514 Hussain514

29-09-2016

(2a – 5)2
4a^2+25_20a
4a^2-20a+25
by using formula (a+b)^2
D is the right option
hope this helps

Answer Link

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