Answer
The sign was dropped when multiplying by the second term.
$-6x^2+15x$
Work Step by Step
$-3x(2x-5)=-3x(2x)+(-3x)(-5)=-6x^2+15x$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 8 - Polynomials and Factoring - 8-2 Multiplying and Factoring - Practice and Problem-Solving Exercises - Page 483: 36
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