Question

5b2-3ab if a=4 and b=5

Answer 1

Answer:

$5b {}^{2} - 3ab$

$5(5) {}^{2} - 3(4)(5)$

125-60

=65

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Answer 2

5b²-3ab at a=4,b=5

5(5)²-3(4)(5)

=5x25 -60

=125-60

=60

Thus, your answer is 60.