3 x 7 + 0 = 21
Chat with our AI personalities
x2 + 10x + 21 = (x + 3)(x + 7)
273 13+8 = 21 and 13*21 = 273
n = 7. 3(7) + 7 = 28. 21+7=28
3x + 7 = -4x + 28 implies 7x + 7 = 28
7+(7*3) because 7*3=21 and 21+7=28, which is equal to 28, the product of 4*7.