b2 + 8b + 7 is an expression that represents a number. The exact identity
of that number depends on the value of 'b', and whenever 'b' changes, the
number also changes.
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Assuming your equation = 0, then:b3+8b2+7b = 0factor out b:b(b2+8b+7) = 0factor the squared term:b(b+7)(b+1) = 0So the answers are:b = 0b+7 = 0, b=-7b+1 = 0, b=-1
(-8 + b2) - (5 + b2) = -8 + b2 - 5 - b2 = -13
8b = e - 12n, possibly.
6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b
11a+11b