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Q: 2x-3 equals 10x plus 21

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x2 + 10x + 21 = (x + 3)(x + 7)

2x-3 = 21+10x 2x-10x = 21+3 -8x = 24 x = -3

(x2+10x+21)/(x+3) = (x+7)

-171 = 19x so x = -9

-3x + 10x - 5 + 26 = 7x + 21

It is: x2-10x+21 = 0 and the value of x is 3 or 7 when solved

x2+10x+21 = (x+3)(x+7)

Factorising, we obtain, x2 + 10x + 21 = (x + 7)(x + 3). Thus, x2 + 10x + 21 / (x + 3) = x + 7. That's usually easier than dividing it out!

10x+15 = 7x-21 10x-7x = -21-15 3x = -36 x = -12 Which is the solution to the above equation when simplified.

The roots are -3 and -7. Easily by factoring and setting each factor equal to 0. The factors are x + 7 and x +3.

(x-7)(x-3)

The mathematical statement 31 plus 21 equals 52 as a total.

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