write square of (-3p-5q+2r)2
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Step-by-step explanation:
(3p+5q−2r)
2
=(3p)
2
+(5q)
2
+(−2r)
2
+2(3p)(5q)+2(5q)(−2r)+2(−2r)(3p)
=9p
2
+25q
2
+4r
2
+30pq−20qr−12rp
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