Question

find another factor if others are given 7x...=56​

Answer 1

Answer:

x=

2

7−

273

=−4.761

x=

2

7+

273

=11.761

Step-by-step explanation:

Factoring x2-7x-56

The first term is, x2 its coefficient is 1 .

The middle term is, -7x its coefficient is -7 .

The last term, "the constant", is -56

Step-1 : Multiply the coefficient of the first term by the constant 1 • -56 = -56

Step-2 : Find two factors of -56 whose sum equals the coefficient of the middle term, which is -7 .

-56 + 1 = -55

-28 + 2 = -26

-14 + 4 = -10

-8 + 7 = -1

-7 + 8 = 1

-4 + 14 = 10

-2 + 28 = 26

-1 + 56 = 55

Observation : No two such factors can be found !!

Conclusion : Trinomial can not be factored

Equation at the end of step

1

:

x2 - 7x - 56 = 0

STEP

2

:

Parabola, Finding the Vertex

Answer 2

Step-by-step explanation:

7x=56

x=56/7

x=8

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