3 years ago

(−9a+4b)^2 10000 Points for Brainliest Answer!!!!

Mathematics

2 answers:

photoshop1234 [79]3 years ago

4 0

Answer:

81a^2+16b^2

Step-by-step explanation:

Gekata [30.6K]3 years ago

3 0

Answer:

Step-by-step explanation:

(−9a+4b)^2

= (−9a+4b)(−9a+4b)

= 81a^2 - 36ab - 36ab + 16b^2

= 81a^2 - 72ab + 16b^2

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