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OpenStudy (anonymous):
What is the value of 21 + 2a4 – 4b2 when a = -2 and b = 3?
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OpenStudy (sleepyjess):
just substitute in the values 21+2(-2)^4 - 4)3)^2
OpenStudy (sleepyjess):
21+2(-2)^4 - 4(3)^2
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