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Solve the equation for all real solutions in simplest form.

-3r^(2)-r-10=-4r^(2)

Solve the equation for all real solutions in simplest form.\newline3r2r10=4r2 -3 r^{2}-r-10=-4 r^{2}

Full solution

Q. Solve the equation for all real solutions in simplest form.\newline3r2r10=4r2 -3 r^{2}-r-10=-4 r^{2}
  1. Move r2r^2 terms: Add 4r24r^2 to both sides of the equation to move all the r2r^2 terms to one side.\newline3r2r10+4r2=4r2+4r2-3r^2 - r - 10 + 4r^2 = -4r^2 + 4r^2\newlineThis simplifies to r2r10=0r^2 - r - 10 = 0.
  2. Factor quadratic equation: Factor the quadratic equation r2r10r^2 - r - 10. We look for two numbers that multiply to 10-10 and add to 1-1. These numbers are 5-5 and 22. So, the factored form is (r5)(r+2)=0(r - 5)(r + 2) = 0.
  3. Solve for rr: Set each factor equal to zero and solve for rr.\newlineFirst, set r5=0r - 5 = 0, which gives r=5r = 5.\newlineSecond, set r+2=0r + 2 = 0, which gives r=2r = -2.

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