4 * 21 = 4 * (20 + 1) = 4*20 +4*1 = 80 + 4 = 84.
-4
The product of 3 and 7 is 21
The product of 21 multiplied by 57 is 1,197.
x2 + 4x - 21 = (x + 7)(x - 3). The trick is to find 2 numbers which sum to 4 and have a product of -21.
How about: 4*21 = 84
4 * 21 = 4 * (20 + 1) = 4*20 +4*1 = 80 + 4 = 84.
Seven and minus three; 7*(-3) = -21 & 7 + (-3) = 4.
-4
The product of 3 and 7 is 21
3 x - 7 = -21
product
You should be more specific. C could be any number. Let's say that c=3 3x7=21 21-4=17
The product of 21 multiplied by 57 is 1,197.
x2 + 4x - 21 = (x + 7)(x - 3). The trick is to find 2 numbers which sum to 4 and have a product of -21.
59
12/3 * 21/4 = 5/3 * 9/4 = 15/4 = 33/4