Math, asked by hetjoshi17, 7 days ago

(3r+ s-1)² = 9r²+ s² + t² + 3rs - st+ krt. What is k? S A. -6 B.-3 C. 3 D. 6

Answers

Answered by dkchakrabarty01

0

Answer:

krt=3r×(-t)

k= -3

(a+b+c)^2=sq terms+ab+bc+ca

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