factorise 16x^2-28x+49
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trinomial cant be factored.
Step-by-step explanation:
The first term is, 16x2 its coefficient is 16 .
The middle term is, -28x its coefficient is -28 .
The last term, "the constant", is +49
Step-1 : Multiply the coefficient of the first term by the constant 16 • 49 = 784
Step-2 : Find two factors of 784 whose sum equals the coefficient of the middle term, which is -28 .
-784 + -1 = -785
-392 + -2 = -394
-196 + -4 = -200
-112 + -7 = -119
-98 + -8 = -106
-56 + -14 = -70
For tidiness, printing of 24 lines which failed to find two such factors, was suppressed
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