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(2x-1)*(3x+5)=5
Use foil's method. First Outside Inside Last for multiplying
the equation turns out to this
(2x*3x)+(2x*5)+-(1*3x)+-(1*6)=5
Solve within the parentheses.
6x2+ 10x+-3x+-6=5
Continue to solve
6x2+7x+-6=5
You need to make =5 to =0
6x2+7x+-6+-5=5-5
6x2+7x+-11=0
quadratic formula is x=[-b +- {b^2*(-4ac)^2}]/2a
there are two equations to solve. the number and the opposite of a number
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2x1 plus 3x2 plus 7x3 equals 12?
No. 7*3, alone, is bigger than 12.
What times what equals 2?
it wouldn't equal anything its a prime number but of course it would be only 2x1
2 times 2 equals what?
It is: 1*2 = 2 which is also a prime number
4x-7y equals 13 -2x plus 7y equals -3?
One way to solve this system of equations is by using matrices. Form an augmented matrix in which the first 2x2 matrix is the coefficient matrix and the 2x1 matrix on its right is the answer. Now apply Gaussian Elimination and back-substitution. Using this method gives x=5 and y=1.
What decimal is represented by this expanded form 3x1000 plus 6x100 plus 1x10 plus 2x110 plus 1x11000?
3x1000 + 6x100 + 1x10 + 2x1/10 + 1x1/1000 = 3000 + 600 + 10 + 0.2 + 0.001 = 3610.201
Maxz equals 2x1 plus 2x2 stc 5x1 plus 3x2 equals 8 x1 plus 2x2 equals 4 x1 x2 equals 0 and integerssolve by ipp?
3
2x1 plus 3x2 plus 7x3 equals 12?
No. 7*3, alone, is bigger than 12.
What times what equals 2?
it wouldn't equal anything its a prime number but of course it would be only 2x1
2 times 2 equals what?
It is: 1*2 = 2 which is also a prime number
4x-7y equals 13 -2x plus 7y equals -3?
One way to solve this system of equations is by using matrices. Form an augmented matrix in which the first 2x2 matrix is the coefficient matrix and the 2x1 matrix on its right is the answer. Now apply Gaussian Elimination and back-substitution. Using this method gives x=5 and y=1.
What number times itself equals 2?
There is no number that if you multiply it by the same number will equal 2. only 2x1 is the only multiplyed number that will equal 2.====================================You both might like to play around with 1.414214 for a while.
What decimal is represented by this expanded form 3x1000 plus 6x100 plus 1x10 plus 2x110 plus 1x11000?
3x1000 + 6x100 + 1x10 + 2x1/10 + 1x1/1000 = 3000 + 600 + 10 + 0.2 + 0.001 = 3610.201
2x1?
2
What is 118x12?
118x12 equals 354+1118X 12====236+118====3541. 8x2 is 16.2. You bring the 1 to 2x1.3. 2x1 is 2, add the 1 which is 3.4. Then you multiply 2x1 again which is 2.NOW YOUR ON THE ROW...1. Add the magic 0.2. Multiply 1x8=8.3. Then you will multiply 1x1 which is 1.4. Last but not least you Multiply 1x1 again, and it equals 1.5. NOW YOU ADD ALL THAT UP AND YOU GET 354
How do you do 22.056 in expanded form?
22 + .056
1+1=2x1?
True
How do you learn times tables a fun way?
sing a song about it like :now here we go 1x1=1 and 2x1=2 and carry on
