To find numbers that multiply to make -21, one number must be positive and the other must be negative. For example, 3 and -7 multiply together to give -21 (3 × -7 = -21). Other pairs include -3 and 7, or 1 and -21.
21 x 7 49 x 3 147 x 1
3 and 7
The three numbers that can be multiplied together to get 21 are 3, 7, and 1, since (3 \times 7 \times 1 = 21). Other combinations include negative numbers, such as -3, -7, and -1, which also multiply to give 21. Additionally, you can use fractions, like ( \frac{21}{3} ), ( \frac{21}{7} ), and 1.
The numbers are: 1 plus square root of 21 and 1 minus square root of 21
There are many pairs of numbers that can multiply to make 168. For example, 12 and 14 are one such pair, as (12 \times 14 = 168). Another pair is 8 and 21, since (8 \times 21 = 168) as well.
21 x 7 49 x 3 147 x 1
3 and 7
The three numbers that can be multiplied together to get 21 are 3, 7, and 1, since (3 \times 7 \times 1 = 21). Other combinations include negative numbers, such as -3, -7, and -1, which also multiply to give 21. Additionally, you can use fractions, like ( \frac{21}{3} ), ( \frac{21}{7} ), and 1.
1 x 42 2 x 21 3 x 14 6 x 7
The numbers are: 1 plus square root of 21 and 1 minus square root of 21
42
There are many pairs of numbers that can multiply to make 168. For example, 12 and 14 are one such pair, as (12 \times 14 = 168). Another pair is 8 and 21, since (8 \times 21 = 168) as well.
7x3 or 3x7, which is all you can do to multiply to get 21.
The factor pairs of 189 are: 1 x 189 3 x 63 7 x 27 9 x 21
The numbers are: -1 and -20
7 and 21
The numbers are: 3 -sq rt of 21 and 3 +sq rt of 21