(-7) x X + (-7) x 5= -7x -35
9 x a + 9 x 3=9x +27
5 x 7 - 5 x y= 35-5y
b x b - 2 b = b²-2b
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(-7) x X + (-7) x 5= -7x -35
9 x a + 9 x 3=9x +27
5 x 7 - 5 x y= 35-5y
b x b - 2 b = b²-2b
= - 7x - 35
9 * a + 9 * 3
= 9a + 27
5 * 7 - 5 * y
= 35 - 5y
b * b - 2 * b
= b² - 2b