(5.3十a)+4.7=____=____

(5.3十a)+4.7=____=____ take charge of=___ ____ ____ 46.63°=___°____'____ 步行去某地____ to sp.=go to sp.____ ____ 去散步___ ___ a walk=___ a walk She had a toothache=she had___ ___ ____ My family ___(have)fun ___(play)in the park now ==My family ___ ____ ourselves ___ in the park==My family ___ ___ a ___ ___ ___ in the park whenever=___ ____ _____ whatever=____ _____ ____ can you help me cook a meal?=can you help me ___ ___ ____? a和b是无理数,a十b=2,a,b的值应该是___. X2-4X十3=（X-___）-___ 有理数及其运算：满足1/a=a的数有___个,他们是____；满足-a=a的数有___个,他们是____. 1.（-3+x）（-3-x）=___ 2.(x-3)(-x-3)=____ 3.（a+___）（a-____）=a²-0.25 若/a+3/+/2a-4/=0则a=___,b=____ （如下） AB.CD A=____ B=____ 十CB.AB C=____ D=____ —————— BB C.BB 34.37度=____度___分___秒? on sale =___the__ ___ ____ next door=___ ____ room 求导数 c'=___ (x^n)'=____ (sin x)'=____ (cos x)'=____ (ln x)'=____ (loga x)'=____ (e^x)'=____(a^x)'=____