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Find the Greatest Common Factor (GCF)

GCF = 2

Factor out the GCF (Write the GCF first. Then, in parentheses, divide each term by the GCF.)

2(4x^2/2 + -22x/2 + 30/2

Simplify each term in parenthesis

2(2x^2 - 11x + 15)

Split the second term in 2x^2 - 11x + 15 into two terms

2(2x^2 - 5x - 6x + 15

Factor out common terms in the first two terms, then in the last two terms

2(x(2x - 5) - 3(2x - 5))

Factor out the common term 2x - 5

2(2x - 5)(x - 3)

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

i got 10.28 but that rounds up to 10.3