In Robert Recorde's Grounde of Artes (1541), an arithmetic text for algorists and abacists, Recorde gave an rule for multiplying two one-digit numbers greater than 6. Here is the rule: first subtract each number from 10. The product of the two differences you get is the units digit in the product of the original numbers, and if you subtract one of the differences from the other original number, you get the tens digit in the product of the original numbers. A) Show two examples of this method.
B) Prove that it works.

answer: the answer is simply nothing.

step-by-step explanation: because there is no ending to this question

gimme brainliest > : 3

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a