Subtract the second expression from the first. (3x^2+2x-1) - (x^2-3x+4)

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 ((3x2 +  2x) -  1) -  (x2 - 3x + 4)

Step  2  :

Trying to factor by splitting the middle term

2.1     Factoring  2x2+5x-5

The first term is,  2x2  its coefficient is  2 .

The middle term is,  +5x  its coefficient is  5 .

The last term, "the constant", is  -5

Step-1 : Multiply the coefficient of the first term by the constant   2 • -5 = -10

Step-2 : Find two factors of  -10  whose sum equals the coefficient of the middle term, which is   5 .

     -10     +    1     =    -9  

     -5     +    2     =    -3  

     -2     +    5     =    3  

     -1     +    10     =    9  

Observation : No two such factors can be found !!

Conclusion : Trinomial can not be factored

Final result :

 2x2 + 5x - 5

brainliest plz tried rlly hard on this

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,