The factors of x-4 are
(a) (x - 2). (x - 2)
(b) (x + 2). (x - 2)
(c)(x + 2). (x + 2)
(d) (x-4), (x4)
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Example 2 Write - y(y2 + 3y - 4) without parentheses. ... Notice that the first term in the trinomial, x2, is product (1); the last term in the trinomial, 12, ... of the form x2 + Bx + C. We find two numbers whose product is C and whose sum is B. ... x2 + 7x + 12 would be of the form. ( + )( + ). When the first and third terms of a trinomial
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