factorise 7x*2 + 17x + 10 guys pls find this it is urgent
Answers
Step-by-step explanation:
The first term is, 7x2 its coefficient is 7 .
The middle term is, -17x its coefficient is -17 .
The last term, "the constant", is +10
Step-1 : Multiply the coefficient of the first term by the constant 7 • 10 = 70
Step-2 : Find two factors of 70 whose sum equals the coefficient of the middle term, which is -17 .
-70 + -1 = -71
-35 + -2 = -37
-14 + -5 = -19
-10 + -7 = -17 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -10 and -7
7x2 - 10x - 7x - 10
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (7x-10)
Add up the last 2 terms, pulling out common factors :
1 • (7x-10)
Step-5 : Add up the four terms of step 4 :
(x-1) • (7x-10)
Answer:
x= -1 or -10/7
hope this answer is helpful
