Find the product of (x² + 2x -3)(4x² -5x + 6)​

Step-by-step explanation:

(x² + 2x - 3 ) *(4x² - 5x + 6) = x² *(4x² - 5x +6) +2x*(4x² - 5x + 6) -3*(4x² - 5x + 6)

 = x²*4x² + x²*(-5x) + x²*6 +2x*4x² + 2x*(-5x) +2x*6 + (-3)*4x² + (-3)*(-5x) + (-3)*6

= 4x⁴ - 5x³ + 6x² + 8x³ - 10x² + 12x - 12x² + 15x - 18

= 4x⁴ - 5x³ + 8x³  + 6x² -10x² - 12x² + 12x + 15x - 18

= 4x⁴ + 3x³ - 16x² + 27x - 18

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.