Answered

Makahanap ng mga solusyon sa iyong mga problema gamit ang IDNStudy.com. Ang aming platform ay nagbibigay ng mga maaasahang sagot upang matulungan kang gumawa ng matalinong desisyon nang mabilis at madali.

Solve The ff.quadratic equations by extracting square roots.
1.x^2=16
2.t^2=81
3.r^2-100=0
4.x^2-144=0
5.2s^2=50
6.4x^2-225=0
7.3h^2-147=0
8.(x-4)^2=169
9.(k+7)^2=289
10.(2s-1)^2=225

Sagot :

Mlcparra16idn
1. x² = 16 ; x=±√16=±4
2. t²=81 ; t=±√81=±9
3. r²-100=0 ; r²=100 ; r=±√100=±10
4. x²-144=0 ; x²=144 ; x=±√144=±12
5. 2s²=50 ; s²=25 ; s=±√25=±5
6. 4x²-225=0; 4x²=225; x²=225/4 ; x=±√(225/4)=±15/2
7. 3h²-147=0; 3h²=147; h²=147/3=49; h=±√49=±7
8. (x-4)²=169; x-4=±√169=±13;
When x-4 = 13, x=17
   "     x-4 = -13, x=-9
9. (k+7)²=289; k+7=±√289=±17;
When k+7 = 17, k=10
    "    k+7 = -17, k=-24
10. (2s-1)²=225; 2s-1=±√225=±15
When 2s-1=15, s=8
   "     2s-1=-15, s=-7