(70,2)(35,4)(28,5)(20,7)(14,10)
They are: 4*5*7 = 140
How about: 4*5*7 = 140
70*2
140
There are infinitely many pairs. The simplest is 1 and 140.
280
They are: 4*5*7 = 140
How about: 4*5*7 = 140
The two numbers that multiply to -140 and add up to -8 are 7 and -20. When you multiply them, 7 × -20 equals -140, and when you add them, 7 + (-20) equals -8.
70*2
140
The two numbers that add up to -140 and multiply to 4900 are -70 and -70. Since they are the same number, -70 + -70 equals -140, and -70 * -70 equals 4900.
There are infinitely many pairs. The simplest is 1 and 140.
-144
-171
2840
There are five ways to get to 140: 70 and 2, 14 and 10, 28 and 5, 35 and 4, and 20 and 7.