using multiplication what is the answer to these problems (wanting to check answers for my son)?

Question

1. (x-2)(x-7)
2. (X+9)(x-3)
3. (X+6)(x-8)
4. (x+3)(x-2)

Answer 1

1. x^2 - 9x + 14
2. x^2 + 6x - 27
3. x^2 - 2x - 48
4. x^2 + x - 6

Answer 2

1. x^2 - 9x + 14
2. x^2 + 6x - 27
3. x^2 - 2x - 48
4. x^2 + x - 6

Answer 3

1. x^2 - 9x + 14
2. x^2 + 6x - 27
3. x^2 - 2x - 48
4. x^2 + x - 6

Answer 4

Just as a note there is a short acronymn for knowing how to multiply these types of problems

I will show you an example on the first problem only

the acronymn is called "FOIL"
which means you multiply the

'First' terms by each other (X multiplied by X)=x^2
'Outer' terms (-7 multiplied by x)=-7x
'Inner' terms (-2 multiplied by x)=-2x
'Last' terms (-7 multiplied by -2)=+14

so that is where the F O I L term comes from, you then have to add your intermediate results
(x^2)+(-7x)+(-2x)+(+14) =x^2-9x+14

hope this helps

Answer 5

1. x² - 7x - 2x + 14 = x² - 9x + 14
2. x² - 3x + 9x - 27 = x² + 6x - 27
3. x² - 8x + 6x - 48 = x² - 2x - 48
4. x² - 2x + 3x - 6 = x² + x - 6

Answer 6

1. x^2 - 9x + 14
2. x^2 +6x - 27
3. x^2 - 2x - 48
4. x^2 + x - 6

The ^ is read "to the power of."

Answer 7

There may well be a standard answer, yet permit me share what befell with one in each and every of my boys. Please submit to with the roundabout tale, in spite of the undeniable fact that it ought to prepare. I used flashcards to have him memorize the states by their shape. i develop into surprised at how directly he memorized all of them. i presumed flashcards have been now the superb element. Then I switched to multiplication flashcards, looking forward to the comparable effect. fairly we hit a dull end. on an identical time as quickly as I went all the way down to rotating in simple terms 5 flashcards, many times returned, he in simple terms develop into no longer getting it. i could no longer parent it out. Then i found out the adaptation. States have been pictorial, mutually as the multiplication develop into in simple terms 2 numbers (with out the respond). presently after that, i develop into at a homeschool convention and listened to Diane Craft (you could google her). in short, I discovered that my son necessary a distinctive thank you to memorize his data --- pictures!! I picked up a e book called "cases Tables the exciting way." It develop into the craziest element I ever observed. Seeing how they carry about purposefully stupid thoughts and draw pictures with the numbers drawn as a swan or a snowman,,, it couldcontinual me loopy. yet for this form of learner, it develop into the jackpot. We carry the photograph up of a undeniable actuality and he stares and memorizes the photograph. Then that's what he later remembers whilst he has them memorized. So, if flashcards do no longer artwork directly, he could have a distinctive discovering sort. you will locate by comparing it to state enjoying cards. besides, that develop into my journey. it will be somewhat complicated for him in the event that they circulate on previously he's waiting. he will sense in the back of and conflict and at last study to hate math. desire you will locate his answer.