Question

find the constant value of this expression -5x + 3y + 10​

Answer 1

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Step-by-step explanation:

1.1 Factoring y2-3y-10

The first term is, y2 its coefficient is 1 .

The middle term is, -3y its coefficient is -3 .

The last term, "the constant", is -10

Step-1 : Multiply the coefficient of the first term by the constant 1 • -10 = -10

Step-2 : Find two factors of -10 whose sum equals the coefficient of the middle term, which is -3 .

-10 + 1 = -9

-5 + 2 = -3 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -5 and 2

y2 - 5y + 2y - 10

Step-4 : Add up the first 2 terms, pulling out like factors :

y • (y-5)

Add up the last 2 terms, pulling out common factors :

2 • (y-5)

Step-5 : Add up the four terms of step 4 :

(y+2) • (y-5)

Hope it helps you...

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