How is multiplication using partial products different from multiplication using regrouping and how are they similar

Explained below.

Step-by-step explanation:

Multiplication using partial products is the process of multiplying the ones first, tens next, hundreds next and so on. and finally adding all the products.

Ex:

15 × 75 = 15 × (70 + 5)

= (15 × 70) + (15 × 5)

= 1050 + 75

= 1125

Multiplication using regrouping is the process of carrying over the tens, hundreds, thousands, and so on. to the next level and adding them to the subsequent products.

Ex:

15 × 75 =

  75

105

1125

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

111

step-by-step explanation: